Billet Aluminum Oil Filter Cap for 6.0L 6.4L Powerstroke for Ford F250 F350 F450 F550 Excursion

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Details
Model Year Range Engine
for Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, for Ford F550 Super Duty 2003-2007 supplied fitment range, unverified by VIN 6.0L Powerstroke Diesel
for Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, for Ford F550 Super Duty 2008-2010 supplied fitment range, unverified by VIN 6.4L Powerstroke Diesel
for Ford Excursion 2003-2005 supplied fitment range, unverified by VIN 6.0L Powerstroke Diesel

EGR Performance EC781 billet aluminum oil filter cap is designed as an oil filter cap replacement for listed for Ford Super Duty 6.0L Powerstroke Diesel and 6.4L Powerstroke Diesel applications, plus listed for Ford Excursion 6.0L Powerstroke Diesel applications, using source-supported references including replacement for EC781, replacement for 1840754C91, replacement for 3C3Z-6766-CA, replacement for RK31821, and replacement for 904-204. The supplied fitment ranges are not VIN-verified, so confirm your engine, original cap part number, and vehicle configuration before ordering.

Product Overview

This EGR Performance oil filter cap is made from 6061 T6 billet aluminum with an anodized finish for improved durability and finish quality compared with the original plastic cap design referenced in the source information.

The billet aluminum construction helps address the concern of cracking a factory plastic 6.0L fuel or oil filter cap during installation or removal. It is intended for listed for Ford 6.0L Powerstroke Diesel and 6.4L Powerstroke Diesel vehicles where the original cap matches the supplied replacement part references.

This EC781 oil filter cap includes a built-in 1/8 inch port, which the supplied evidence states can simplify adding pressure or temperature gauges. Package content is 1 EC781 Oil Filter Cap. Installation instructions are not included.

EGR Performance backs this product with a 1-year manufacturer warranty. For fitment help or product support, contact service@egrperformance.com.

Common Faults & Replacement Symptoms

  • Cracked factory plastic oil filter cap: This EC781 billet aluminum oil filter cap helps replace a damaged original cap on listed for Ford 6.0L Powerstroke Diesel and 6.4L Powerstroke Diesel applications when your original part matches replacement for EC781 or the supplied cross references.
  • Damage during cap removal or installation: If the original plastic fuel or oil filter cap on a listed for Ford Super Duty or for Ford Excursion application is prone to cracking during service, this billet aluminum oil filter cap provides a more durable replacement option based on the supplied product evidence.
  • Need for gauge port access: The built-in 1/8 inch port on this EGR Performance oil filter cap can simplify adding pressure or temperature gauges on compatible listed for Ford Powerstroke Diesel vehicles.
  • Original cap part number match: This oil filter cap is intended for applications requiring replacement for 1840754C91, replacement for 3C3Z-6766-CA, replacement for RK31821, or replacement for 904-204, subject to VIN, engine, and original cap verification.
  • Unverified fitment warning: Fault codes and vehicle performance symptoms are not specified in the supplied source. Before purchasing, confirm that your listed for Ford vehicle uses the same oil filter cap reference and that the cap is the cause of the service issue.

Ideal For

This EGR Performance EC781 billet aluminum oil filter cap is ideal for owners and technicians servicing listed for Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, and for Ford F550 Super Duty trucks with the supplied 6.0L Powerstroke Diesel or 6.4L Powerstroke Diesel fitment ranges, as well as listed for Ford Excursion vehicles with the supplied 6.0L Powerstroke Diesel fitment range.

It is also a practical choice for buyers who want a billet aluminum oil filter cap with an anodized finish and a built-in 1/8 inch port, while staying matched to source-supported references including replacement for EC781 and replacement for 3C3Z-6766-CA.

Trim levels, drive types, cab configurations, and build-date details are not specified in the supplied evidence. Please confirm your VIN, engine, original cap part number, and vehicle configuration before ordering.

Shipping Details

Ontario CA / Springdale OH / Newark NJ

Package List

Complete Package Contents

Your package includes the source-supported quantity listed below for thisEGR Performance oil filter cap.

  • 1 EC781 Oil Filter Cap

Installation instructions are not included. Please confirm fitment by VIN, engine, and original cap part number before installation, especially because the supplied fitment references include unverified year-range information.

Delivery Time

2-5 working days inland in the United States

Attention

Product details

Specifications

ThisEGR Performance EC781 billet aluminum oil filter capis designed as a direct replacement cap for listed diesel applications for Ford Super Duty and for Ford Excursion models using the supported Powerstroke Diesel engines and matching original cap part numbers.

  • Product type:Oil filter cap
  • Material:6061 T6 billet aluminum
  • Finish:Anodized finish
  • Port:Built-in 1/8 inch port for adding compatible pressure or temperature gauges
  • Application style:Replacement oil filter cap for listed Powerstroke Diesel applications
  • Brand:EGR Performance
  • Condition:New
  • Supported fitment from supplied evidence:For Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, and for Ford F550 Super Duty with listed 6.0L and 6.4L Powerstroke Diesel engines; for Ford Excursion with listed 6.0L Powerstroke Diesel engine
  • Fitment verification note:Specific trim levels, drivetrain, cab configuration, and build-date details are not specified in the supplied evidence. Confirm by VIN, engine, and original cap part number before ordering.

Core Advantages

  • Billet aluminum upgrade:The EGR Performance EC781 oil filter cap is made from 6061 T6 billet aluminum to replace the original plastic-style cap on supported applications.
  • Designed to reduce cap cracking concerns:The billet aluminum construction helps address the common buyer concern of cracking a factory plastic 6.0L fuel or oil filter cap during removal or installation.
  • Anodized finish:The anodized finish supports longer-lasting appearance and reliability compared with an unfinished surface.
  • Built-in 1/8 inch port:The integrated 1/8 inch port helps simplify adding compatible aftermarket pressure or temperature gauges when the vehicle setup supports that configuration.
  • Replacement-focused fitment:This cap is listed as a replacement for EC781, replacement for 1840754C91, replacement for 3C3Z-6766-CA, replacement for RK31821, and replacement for 904-204.
  • Powerstroke application coverage:Supplied evidence lists compatibility for Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, for Ford F550 Super Duty, and for Ford Excursion with the listed Powerstroke Diesel engines.

OEM Quality & Compliance Certification

The supplied product evidence describes this EGR Performance oil filter cap as apremium quality 6061 T6 billet aluminum replacement oil filter capwith an anodized finish for improved finish quality, longer lasting time, and reliability. It is intended for buyers replacing a matching original oil filter cap by part number on supported diesel applications for Ford Super Duty and for Ford Excursion.

This product is positioned as anOE-style replacement for OEM-related part referencesincluding replacement for 1840754C91 and replacement for 3C3Z-6766-CA when the vehicle, engine, and original cap number match the supplied application data. The supplied evidence does not state any EPA, SAE, ISO, CARB, or other formal compliance certification, so no additional certification claims are made.

Before purchase, confirm that your vehicle uses the matching cap design and one of the listed replacement part numbers. VIN verification is recommended because trim, drivetrain, cab configuration, and build-date details are not specified in the supplied source information.

Replace Part Numbers

This EGR Performance EC781 billet aluminum oil filter cap is listed as compatible with the following replacement part numbers. Match your original cap number before ordering.

  • replacement for EC781
  • replacement for 1840754C91
  • replacement for 3C3Z-6766-CA
  • replacement for RK31821
  • replacement for 904-204

Complete Package Contents

Your package includes the source-supported quantity listed below for thisEGR Performance oil filter cap.

  • 1 EC781 Oil Filter Cap

Installation instructions are not included. Please confirm fitment by VIN, engine, and original cap part number before installation, especially because the supplied fitment references include unverified year-range information.

Installation & Fitment Notes

  • Professional installation is highly recommended, no installation instructions are included.
  • Before installation, verify that your vehicle is a listed application for Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, for Ford F550 Super Duty, or for Ford Excursion with the supported Powerstroke Diesel engine shown in the supplied fitment evidence.
  • Confirm your original cap part number matches replacement for EC781, replacement for 1840754C91, replacement for 3C3Z-6766-CA, replacement for RK31821, or replacement for 904-204 before ordering this billet aluminum oil filter cap.
  • Check the oil filter housing area and sealing surface before fitting the replacement oil filter cap. Do not install if the related housing, sealing area, or vehicle configuration is not compatible.
  • Use appropriate professional service tools for diesel oil filter service. Tool requirements are not specified in the supplied evidence, so consult a qualified technician for your vehicle configuration.
  • If your for Ford Super Duty or for Ford Excursion has vehicle modifications, accessory gauge plumbing, or a non-original filter housing setup, confirm compatibility before installing the EC781 oil filter cap.
  • Specific trim levels, drive types, cab configurations, and build-date restrictions are not specified in the supplied evidence. VIN and original part number confirmation are recommended before installation.

Warranty & Support

EGR Performance backs this oil filter cap with a1-year manufacturer warranty.

For product support, fitment questions, or warranty assistance, contact customer service atservice@egrperformance.com. Please include your vehicle information, engine, original cap part number, and order details so the support team can help review your application.

Shipping & Delivery Information

Shipping and delivery options for thisEGR Performance EC781 billet aluminum oil filter capmay vary by order location and checkout method. The supplied product evidence lists item location information, but does not provide a fixed processing time, carrier rule, or guaranteed delivery schedule.

  • Shipping coverage:North American shipping coverage is not specifically defined in the supplied evidence. Please confirm available shipping options at checkout.
  • Processing time:Not specified in the supplied evidence.
  • Delivery timing:Not specified as a guaranteed delivery window in the supplied evidence. Review the delivery estimate shown at checkout.
  • Order accuracy tip:Confirm fitment for Ford Super Duty or for Ford Excursion by VIN, engine, and original cap part number before placing your order to help avoid shipping delays or returns.

Why Choose This Product

Choose thisEGR Performance EC781 billet aluminum oil filter capif you need a durable replacement cap for a supported Powerstroke Diesel application and want to move away from the cracking concerns associated with factory plastic-style caps.

  • Built for listed diesel truck applications:Supplied evidence supports use for Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, and for Ford F550 Super Duty with listed 6.0L and 6.4L Powerstroke Diesel fitment ranges.
  • Also listed for Ford Excursion:Supplied evidence supports use for Ford Excursion with the listed 6.0L Powerstroke Diesel fitment range.
  • Part-number-driven buying confidence:Clear replacement references help buyers compare against the original cap before purchase.
  • Gauge-friendly port design:The built-in 1/8 inch port helps simplify adding compatible pressure or temperature gauges where the vehicle setup allows.
  • Warranty-backed purchase:Includes a 1-year manufacturer warranty from EGR Performance.

Long-Term Maintenance Tips

  • During routine diesel oil service for Ford Super Duty or for Ford Excursion applications, inspect the EC781 oil filter cap and surrounding oil filter housing area for signs of seepage, damaged sealing surfaces, or incorrect fitment.
  • When servicing a listed 6.0L Powerstroke Diesel or 6.4L Powerstroke Diesel application, confirm the oil filter cap is seated correctly and that related sealing components are in serviceable condition according to professional service practices.
  • Keep the billet aluminum oil filter cap and 1/8 inch port area clean so debris does not enter the oil filter service area or interfere with compatible pressure or temperature gauge connections.
  • If the vehicle uses accessories connected to the 1/8 inch port, inspect those connections during maintenance to help prevent leaks or loose fittings.
  • Avoid forcing the cap during service. If resistance, cross-threading, or fitment mismatch is noticed, stop and have the oil filter cap and housing checked by a qualified technician.
  • For modified diesel trucks, confirm that any changes near the oil filter housing remain compatible with this EGR Performance replacement oil filter cap during future maintenance.

Vehicle Fitment Description

This EGR Performance EC781 billet aluminum oil filter cap is listed as compatible forfor Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, and for Ford F550 Super Duty equipped with the 6.0L Powerstroke Diesel engine in the supplied 2003-2007 fitment range, and for the same Super Duty model series equipped with the6.4L Powerstroke Diesel engine in the supplied 2008-2010 fitment range. The supplied fitment evidence also lists compatibility forfor Ford Excursion equipped with the 6.0L Powerstroke Diesel engine in the supplied 2003-2005 fitment range. This part is intended as an oil filter cap replacement forreplacement for EC781,replacement for 1840754C91,replacement for 3C3Z-6766-CA,replacement for RK31821, andreplacement for 904-204. Because the source information includes fitment references but does not provide VIN-level trim, drivetrain, cab, or build-date verification, please confirm your engine, original cap part number, and vehicle fitment by VIN before ordering.

Compatible Vehicle Trim & Configuration Details

  • Compatible listing for for Ford F250 Super Duty:Supplied fitment lists 2003-2007 models with the 6.0L Powerstroke Diesel engine and 2008-2010 models with the 6.4L Powerstroke Diesel engine for this EC781 billet aluminum oil filter cap.
  • Compatible listing for for Ford F350 Super Duty:Supplied fitment lists 2003-2007 models with the 6.0L Powerstroke Diesel engine and 2008-2010 models with the 6.4L Powerstroke Diesel engine for this oil filter cap replacement.
  • Compatible listing for for Ford F450 Super Duty:Supplied fitment lists 2003-2007 models with the 6.0L Powerstroke Diesel engine and 2008-2010 models with the 6.4L Powerstroke Diesel engine for this replacement oil filter cap.
  • Compatible listing for for Ford F550 Super Duty:Supplied fitment lists 2003-2007 models with the 6.0L Powerstroke Diesel engine and 2008-2010 models with the 6.4L Powerstroke Diesel engine for this EC781 oil filter cap.
  • Compatible listing for for Ford Excursion:Supplied fitment lists 2003-2005 models with the 6.0L Powerstroke Diesel engine for this billet aluminum oil filter cap.
  • Trim level details:Specific compatible trim levels are not specified in the supplied evidence. Confirm compatibility by VIN, engine, and original part number before purchase.
  • Drive type details:2WD and 4WD compatibility is not specified in the supplied evidence. Confirm your vehicle configuration before ordering.
  • Cab configuration details:Regular Cab, SuperCab, Crew Cab, and other cab configuration compatibility is not specified in the supplied evidence. Confirm your vehicle configuration before ordering.
  • Important exclusion note:The supplied evidence only supports the listed for Ford Super Duty and for Ford Excursion applications with the listed Powerstroke Diesel engines and listed replacement part numbers. Any vehicle, engine, trim, drivetrain, cab style, or modified setup outside the supplied fitment data should be treated as unverified unless confirmed by VIN and original part number.
  1. Dispatch Time: Orders will be shipped within 24 hours after successful payment.
  2. Delivery Time: 2-5 business days after dispatch (delivery speed depends on proximity to warehouse location).
  3. Return Window:7 days for unsatisfactory items45 days for quality-related issues
  4. Refund Processing: Refunds will be processed back to your original payment method within 2-4 business days after receiving the automated refund confirmation email (subject to bank verification).

FAQ (Frequently Asked Questions)

Will this EGR Performance EC781 oil filter cap fit my for Ford Super Duty truck?

ThisEGR Performance EC781 billet aluminum oil filter capis listed in the supplied fitment evidence forfor Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, and for Ford F550 Super Dutywith the 6.0L Powerstroke Diesel engine in the supplied 2003-2007 range and with the 6.4L Powerstroke Diesel engine in the supplied 2008-2010 range. These year ranges are source-supplied and unverified at VIN level, so confirm your engine, original cap, and vehicle configuration before ordering.

Does this billet aluminum oil filter cap fit for Ford Excursion?

The supplied product evidence lists thisEC781 oil filter capas compatible forfor Ford Excursionwith the 6.0L Powerstroke Diesel engine in the supplied 2003-2005 range. Trim, drivetrain, and VIN-level configuration details are not specified, so please confirm the original cap part number before purchase.

Which replacement part numbers does this EGR Performance oil filter cap cross-reference?

This product is intended as an oil filter capreplacement for EC781,replacement for 1840754C91,replacement for 3C3Z-6766-CA,replacement for RK31821, andreplacement for 904-204. Match one of these numbers to your original cap or service reference before ordering for Ford Powerstroke Diesel applications.

Is this oil filter cap made from aluminum or plastic?

ThisEGR Performance EC781 oil filter capis made from6061 T6 billet aluminumand is anodized for finish quality, longer lasting use, and reliability. It is designed to help avoid concerns associated with cracking a factory plastic 6.0L fuel or oil filter cap during removal or installation.

Does this EC781 cap include a port for pressure or temperature gauges?

Yes, the supplied product evidence states that thisbillet aluminum oil filter capcomes with a built-in1/8 inch port, which can simplify adding pressure or temperature gauges on compatible for Ford 6.0L and 6.4L Powerstroke Diesel applications.

What is included in the package?

The package includes1 EC781 Oil Filter Cap. No additional package contents are specified in the supplied evidence, so confirm that this single cap matches your original oil filter cap and required replacement part number before installation.

Are installation instructions included with this EGR Performance oil filter cap?

No,installation instructions are not includedwith this EGR Performance EC781 oil filter cap. Professional installation or service-manual guidance is recommended if you are not familiar with oil filter cap replacement on for Ford Powerstroke Diesel engines.

Will this cap fit every trim, cab, or drivetrain configuration for Ford F250, F350, F450, or F550 Super Duty?

The supplied evidence does not specify trim levels, 2WD or 4WD, cab configurations, or build-date details for thefor Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, and for Ford F550 Super Dutyfitment. Confirm compatibility by VIN, engine, and original part number before ordering.

How does this billet aluminum cap compare with a factory plastic oil filter cap?

The source information states that the6061 T6 billet aluminum oil filter caphelps prevent worries about cracking a factory plastic 6.0L fuel or oil filter cap during installation or removal. It is also anodized for finish quality and reliability on the listed for Ford Powerstroke Diesel applications.

Is this product covered by a warranty?

Yes, thisEGR Performance EC781 billet aluminum oil filter capis covered by a1-year manufacturer warranty. Warranty support applies to the product itself and does not replace the need to verify fitment by VIN, engine, and original cap part number before installation.

Who should I contact if I need help confirming fitment?

For fitment support with thisEGR Performance oil filter cap, contact customer service atservice@egrperformance.com. Please include your vehicle details, engine, original cap part number, and any reference toreplacement for EC781,replacement for 1840754C91, orreplacement for 3C3Z-6766-CAwhen requesting help.

Is shipping information available for this oil filter cap?

Shipping timing and carrier details are not specified in the supplied product evidence for thisEGR Performance EC781 oil filter cap. Please review the current checkout page or contactservice@egrperformance.comfor order-specific shipping information.

What should I check before ordering this replacement oil filter cap?

Before ordering, confirm that your vehicle is one of the source-listed for Ford applications, verify your 6.0L or 6.4L Powerstroke Diesel engine, and match your original cap or service reference toreplacement for EC781,replacement for 1840754C91,replacement for 3C3Z-6766-CA,replacement for RK31821, orreplacement for 904-204. Because the supplied fitment ranges are not VIN-verified, VIN confirmation is recommended.

What is the return policy for this EC781 oil filter cap?

A specific Shopify return policy is not provided in the supplied product evidence for thisEGR Performance EC781 oil filter cap. Please review the store return policy before purchase or contactservice@egrperformance.comif you need help with fitment concerns before ordering.

Installation Guide

Professional installation is highly recommended, no installation instructions are included. This EGR Performance EC781 billet aluminum oil filter cap is intended for use only where the vehicle, engine, and original cap part number match the supplied fitment evidence.

  • Pre-installation fitment check: Confirm your application is listed for Ford F250 Super Duty, for Ford F350 Super Duty, for Ford F450 Super Duty, for Ford F550 Super Duty with the source-listed 6.0L Powerstroke Diesel or 6.4L Powerstroke Diesel fitment, or for Ford Excursion with the source-listed 6.0L Powerstroke Diesel fitment.
  • Part number confirmation: Verify your original cap or service reference matches replacement for EC781, replacement for 1840754C91, replacement for 3C3Z-6766-CA, replacement for RK31821, or replacement for 904-204 before installation.
  • VIN confirmation required: Trim level, drivetrain, cab configuration, and build-date compatibility are not specified in the supplied evidence. Confirm fitment by VIN, engine, and original part number before ordering or installation.
  • Modification note: The source information lists a built-in 1/8 inch port for adding pressure or temperature gauges, but modified vehicle setups are not fully specified. Confirm gauge, sensor, and engine-bay clearance compatibility before use.
  • Unverified applications: Any vehicle, engine, trim, drivetrain, cab style, or modified setup not listed in the supplied fitment evidence should be treated as unverified unless confirmed by VIN and original part number.
  • Installation difficulty: Difficulty information is not supplied. Refer to the applicable factory service manual or contact technical support before installation.
  • Installation time: Installation time is not supplied. Refer to the applicable factory service manual or contact technical support before installation.
  • Recommended tools: Tool requirements are not supplied. Refer to the applicable factory service manual or contact technical support before installation.
  • Step-by-step procedure: Step-by-step installation instructions are not supplied and are not included. Refer to the applicable factory service manual or contact technical support before installation.
  • Support and warranty: This EGR Performance product includes a 1-year manufacturer warranty. For fitment or product support, contact customer service at service@egrperformance.com.