OBD II Port Lock for Cummins Duramax Power Stroke Ford Chevy Ram trucks
OBD II Port Lock front view
OBD II Port Lock key and installation kit
OBD II Port Lock included parts
EGR Performance OBD II Port Lock
OBD II Port Lock for Cummins Duramax Power Stroke Ford Chevy Ram trucks
OBD II Port Lock front view
OBD II Port Lock key and installation kit
OBD II Port Lock included parts
EGR Performance OBD II Port Lock

OBD II Port Lock for 6.7L Cummins / 6.6L Duramax / 6.7L Power Stroke Ford, Chevy & Ram Trucks (1996–2026)

$35.89
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Details

Keyed OBD2 port lock for Ford, Chevy & Ram trucks. In stock, fast USA shipping.

Stop key cloning and ECU tampering on your pickup. This keyed aluminum OBD-II lock fits gas (1996+) and diesel (2008+) trucks. In stock now with fast USA shipping.

Vehicle Fitment Table
Brand Model Year Engine Model
Ford F-150 1996–2025 2.7L / 3.5L EcoBoost, 5.0L Coyote
Ford F-250 / F-350 Super Duty 1996–2025 6.7L Power Stroke, 7.3L Godzilla, 6.2L Flex
Chevrolet Silverado 1500 1996–2025 5.3L / 6.2L EcoTec3 V8
Chevrolet Silverado 2500HD / 3500HD 2001–2025 6.6L Duramax LB7–L5P
Ram 1500 1996–2025 5.7L HEMI, 3.6L Pentastar
Ram 2500 / 3500 1996–2025 6.7L Cummins, 6.4L HEMI
GMC Sierra 1500 / 2500HD / 3500HD 1996–2025 5.3L/6.2L EcoTec3, 6.6L Duramax
Toyota Tundra 2000–2025 5.7L i-FORCE V8, 3.4L i-FORCE MAX
✅ Exact Fitment Guarantee | If you are unsure about compatibility, please contact us at service@egrperformance.com with your VIN number.
The OBD II Port Lock is a key-operated anti-theft device built for Ford, Chevy, Ram, and GMC truck owners, including hard-working 6.7L Cummins, 6.6L Duramax, and 6.7L Power Stroke diesel pickups. An unprotected OBD-II port lets a thief plug in a scan tool in seconds, steal driving data and trouble codes, clone a key, or reprogram the ECU. This lock's keyed aluminum housing physically blocks the diagnostic port, and only someone with the matching security key can remove it — no special tools, wiring, or vehicle modifications required. It fits any standard 16-pin OBD-II port on gas vehicles from 1996 and diesel vehicles from 2008 onward. Read on for full fitment, step-by-step installation, troubleshooting, and maintenance guidance.
Shipping Details

Ontario CA / Springdale OH / Newark NJ
Package List
  • 1x OBD II Port Lock (aluminum alloy, key-operated)
  • 2x Unique security keys
Delivery Time

2-5 working days inland in the United States
Attention
Legal Disclaimer EGR DPF Delete Offroad Use Only

LEGAL DISCLAIMER

This product may NEVER be installed on a vehicle registered for highway or public street use. By installing this product onto your vehicle, you assume all risk and liability associated with its use. It is your responsibility to make sure your vehicle complies with all federal, state, and local emissions laws.

Federal and many state and local laws prohibit the removal, modification or rendering inoperative of any part of the design affecting emissions or safety on motor vehicles used on a public street or highway. Violation may result in a fine of up to $32,500 per vehicle (or possibly higher depending on changes in the law). All civil penalties and fines for removing your vehicle's emissions equipment are the sole responsibility of the end user.

No other applications besides off-road competition racing use are intended or implied. Depending on where you live, additional restrictions may apply. Check all applicable laws before installing or using.

Not available for sale or use in the state of California, Colorado and Arizona.

Product details

Product Overview

  • The OBD II Port Lock is a key-locked aluminum cover for your truck's diagnostic port.
  • It blocks unauthorized scan tools, ECU tampering, key cloning, and data theft.
  • The port can only be opened with the included security key, so access stays exclusively with you.
  • It is a fully mechanical device — no wiring, software, tuner, or calibration needed.
  • It fits virtually any car, SUV, or truck with a standard 16-pin OBD-II connector.

Ideal For

  • Towing and Hauling: Secures tow rigs and loaded work trucks at rest stops, job sites, and overnight parking where OBD theft is common.
  • Daily Driving: Protects your pickup in street parking, lots, and repair shops where you don't control who approaches the dashboard.
  • Off-Road Use: The alloy housing also shields the port from mud, dust, and trail impacts.
  • Commercial Vehicles: Gives fleet managers key-controlled access to diagnostic ports across shared work trucks.
  • Engine Performance Upgrades: A sensible add-on for tuned or modified trucks whose ECUs are high-value theft targets.
  • Long-Term Vehicle Ownership: Avoids the steep cost of key fob replacement, ECU reprogramming, and theft recovery.

Core Advantages

  • Keyed Exclusive Access: Unique Security Key → Only authorized holders can unlock or remove the device.
  • Anti-Theft Protection: Blocked OBD-II Port → Prevents ECU tampering, key cloning, and data breaches.
  • Aluminum Alloy Build: Lightweight, Corrosion-Resistant Housing → Withstands prying attempts and years of daily wear.
  • Zero-Modification Install: No Wiring or Tools Beyond the Key → Protects the vehicle without touching factory electronics.
  • Universal Precision Fit: Standard OBD-II Port Design → Snug, rattle-free fit on most gas (1996+) and diesel (2008+) vehicles.
  • All-In-One Kit: Lock Plus Keys Included → Ready to install out of the box, nothing extra to buy.

Technical Specifications

  • Material: Premium aluminum alloy
  • Finish: Satin corrosion-resistant anodized finish
  • Weight: Approx. 0.4 lb (0.18 kg)
  • Dimensions: Approx. 2.6" L × 1.7" W × 1.3" H (66 × 43 × 33 mm)
  • Lock Type: Key-operated cylinder with unique security key
  • Compatibility: Standard 16-pin J1962 OBD-II ports; gas vehicles 1996+, diesel vehicles 2008+
  • Warranty: 1 Year Limited Warranty against manufacturing defects

Why Choose EGR Performance

  • Premium Quality Materials: Tough aluminum alloy that is lightweight yet resistant to corrosion, prying, and wear.
  • Precision Engineering: Tight-tolerance housing engineered for a secure fit over the factory OBD-II port.
  • Rigorous Testing: Fitment and lock-cycle validation across major American truck platforms.
  • Dedicated Customer Support: Email us at service@egrperformance.com for fitment and technical help.
  • Fast Shipping from USA Warehouse: Domestic stock for quick delivery across the United States.
  • 1 Year Limited Warranty: One year of coverage against manufacturing defects.

roubleshooting and Problem Solving

Common Issues After Installation

  • Key Will Not Turn: The lock is not fully seated over the port — reposition it until the cylinder moves freely; never force the key.
  • Scanner Cannot Connect: The lock is closed or misaligned; unlock it and confirm the connector is undamaged.
  • Loose or Rattling Lock: Re-seat the housing onto the port and check the factory port bracket for play.
  • Check Engine Light: This passive mechanical lock cannot cause a CEL; any illuminated light is typically a pre-existing condition.
  • Rough Idle / Reduced Power / Coolant or Oil Leaks: Not caused by this device — remove the lock and run normal diagnostics.

Error Code Solutions

This lock contains no electronics and cannot generate powertrain codes itself. If codes appear after installation, check the following:

  • U0100 (Lost Communication with ECM/PCM): Remove the lock, verify the OBD-II connector is fully seated, then reinstall.
  • U0073 (Control Module Communication Bus Off): Inspect for a stressed or bent port caused during installation; re-seat the lock without forcing it.
  • U0155 (Lost Communication with Instrument Cluster): Usually a pre-existing bus issue; clear the code with the lock removed and confirm whether it returns.

How to Reset Check Engine Light After Installation

  1. Unlock and remove the device with the security key.
  2. Connect an OBD-II scanner, record any codes, then clear them.
  3. Reinstall and lock the device correctly.
  4. Drive through 2–3 normal drive cycles; if the light returns, diagnose the underlying issue — the lock is not the cause.

What to Do If Your Vehicle Loses Power After Installation

  • Unlock and remove the lock immediately.
  • Inspect the OBD-II port for bent pins, loose connectors, or disturbed wiring.
  • Confirm no harness behind the port was pulled during installation.
  • Reinstall the lock without forcing it against the connector.
  • If power loss continues, contact service@egrperformance.com and a qualified mechanic.

Long-Term Maintenance Tips

  • Regular Inspection: Every 5,000–10,000 miles, verify the lock is seated firmly and the key turns smoothly.
  • Routine Maintenance: Once or twice a year, unlock the device, wipe away dust and grime, and inspect the port and pins.
  • Wear Parts Replacement: If the key sticks or the cylinder shows wear, contact support for service rather than forcing it.
  • Hardware Check: At each oil change, confirm the housing has no play and the factory port bracket remains tight.
  • Storage Tips: Keep the spare key somewhere secure outside the truck; a lock with no available key cannot be removed for service.
  • Warranty Reminder: "Following these maintenance guidelines will keep your 1 Year Limited Warranty valid."

This OBD II Port Lock fits the standard 16-pin diagnostic port on Ford F-150 and F-250/F-350 Super Duty trucks with 2.7L/3.5L EcoBoost, 5.0L Coyote, 6.7L Power Stroke, and 7.3L Godzilla engines; Chevrolet Silverado 1500, 2500HD, and 3500HD with 5.3L/6.2L EcoTec3 and 6.6L Duramax engines; Ram 1500, 2500, and 3500 with 3.6L Pentastar, 5.7L/6.4L HEMI, and 6.7L Cummins engines; GMC Sierra 1500/2500HD/3500HD; and Toyota Tundra pickups. It also fits most other gas vehicles model year 1996 and newer and diesel vehicles model year 2008 and newer.

  • No tuning, wiring, modification, or special conditions are required.
  • Exceptions: Relocated or aftermarket OBD-II ports, non-standard brackets, damaged or loose ports, and certain reinforced fleet port enclosures may not accept the lock without verification.
  • Emissions note: This is a passive security cover that does not alter emissions controls and is street-legal in all 50 states, including California.
  • For 100% fitment confirmation, please send your VIN number to service@egrperformance.com.
  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).

What is an OBD II Port Lock?

It is a key-operated aluminum cover that fits over your vehicle's diagnostic port. It physically blocks thieves from plugging in scan tools to steal data, clone keys, or reprogram the ECU.

How does an OBD II Port Lock work?

The housing covers the 16-pin port and locks with a unique key. Only someone holding that key can remove it, while you can still unlock it for scheduled service or emissions inspections.

What are the benefits of an OBD II Port Lock?

It prevents electronic theft and data breaches, resists physical tampering, and costs far less than replacing a cloned key fob or a reprogrammed ECU. It also shields the port from dust and damage.

Will an OBD II Port Lock void my warranty?

No. It installs without wiring, cutting, or modifying any vehicle system and can be removed without a trace. It does not change how the vehicle operates.

Is an OBD II Port Lock legal in my state?

Yes. It is a passive mechanical security device that does not affect emissions or safety systems, so it is legal in all 50 states.

Do I need a tuner for an OBD II Port Lock?

No tuner or programmer is required or involved. The lock works identically on stock and modified vehicles.

Will this lock add horsepower?

No. It is a security device, not a performance part, so horsepower and torque are unchanged. Its job is to protect the electronics that control your engine.

Will this lock improve my MPG?

No. Because it adds no electronics and changes no engine parameters, fuel economy stays exactly the same.

How long does it take to install an OBD II Port Lock?

Most installations take 5–15 minutes — simply position it over the port and lock it. No disassembly or special tools are needed.

Can I install an OBD II Port Lock myself?

Yes, it is designed for quick DIY installation with the included key. If your port is damaged or in an unusual location, professional installation is recommended.

How often should I maintain my OBD II Port Lock?

Inspect it every 5,000–10,000 miles and remove it once or twice a year to clean the port and test the key. Keep the spare key stored safely.

Will this lock fit my Ford, Chevy, or Ram truck?

It fits any vehicle with a standard 16-pin OBD-II port, including most gas trucks from 1996 and diesel trucks from 2008. Email us your VIN at service@egrperformance.com for confirmation.

What is the warranty on this OBD II Port Lock?

It carries a 1 Year Limited Warranty against manufacturing defects. Damage from forced entry, accidents, or improper use is not covered.

Do you offer technical support?

Yes — email service@egrperformance.com with fitment, key, or installation questions, including your VIN and order number.

How long does shipping take?

Orders leave our USA warehouse within 1–2 business days, and domestic delivery typically takes 3–5 business days.

Can I return this lock if it doesn't fit?

Yes, unused kits in original condition are returnable within our standard return window. Contact support first for fitment help and return instructions.

Installation Difficulty Level

Easy

Estimated Installation Time

0.1–0.2 hour (5–15 minutes)

Required Tools

  • Included security key (only tool needed to lock/unlock)
  • Flashlight (helpful for locating the under-dash port)
  • Screwdriver (only if factory port mounting screws must be loosened on some brackets)

Step-by-Step Installation Overview

  1. Locate the factory OBD-II port under the driver's side dashboard and inspect the 16-pin connector.
  2. Unlock the device with the included key and position the open lock over the OBD-II port.
  3. Seat the lock fully around the port without bending pins, then close and engage the lock cylinder.
  4. Confirm the lock is secure and cannot be slid or pried off by hand.
  5. Test the key operation once, then store the spare key in a safe place outside the vehicle.

Important Note: No printed installation instructions are included. Professional installation is highly recommended. If you need technical support, please contact us at service@egrperformance.com.