TRI-Y Stainless Exhaust Headers for Ford Mustang 289 V8
EGR Performance T304 Stainless Headers 260 302
4-2-1 TRI-Y Headers for Mercury Cougar 1969-1970
Ford Mustang Exhaust Headers 1.5 Primary Tube 2.5 Collector
Stainless Steel TRI-Y Headers for Ford 260 289 302 V8
TRI-Y Stainless Exhaust Headers for Ford Mustang 289 V8
EGR Performance T304 Stainless Headers 260 302
4-2-1 TRI-Y Headers for Mercury Cougar 1969-1970
Ford Mustang Exhaust Headers 1.5 Primary Tube 2.5 Collector
Stainless Steel TRI-Y Headers for Ford 260 289 302 V8

Exhaust Manifold Headers TRI-Y Stainless for Ford Mercury, Mustang, Cougar, 260, 289, 302,

$189.99
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Details
Premium TRI-Y Stainless Steel Exhaust Manifold Headers by EGR Performance – Perfect Fit for 1964-1970 Ford Mustang, 1969-1970 Mercury Cougar & More with 260/289/302 V8 Motors. Boost HP/Tq Instantly & Upgrade Your Exhaust Flow!

 
Shipping Details

Ontario CA
Package List
Delivery Time

2-7 working days inland in the United States

Product details

Product Overview

Introducing the TRI-Y Stainless Steel Exhaust Manifold Headers from EGR Performance – engineered specifically for Ford, Mercury Mustang & Cougar models equipped with 260, 289, or 302 V8 motors. Crafted with high-grade T304 stainless steel, these headers deliver superior durability, maximum exhaust flow, and an instant performance boost for your classic vehicle.Designed with a 4-2-1 TRI-Y style, TIG-welded CNC flanges, and optimized tube sizes, these headers are built to outperform stock manifolds and enhance your vehicle’s power and efficiency. Backed by a 1-year warranty, EGR Performance ensures quality you can trust.

Ideal For

  • 1964-1970 Ford Mustang owners with 260/289/302 V8 motors seeking performance upgrades
  • 1969-1970 Mercury Cougar drivers looking to boost exhaust flow and HP/Tq
  • Classic car enthusiasts wanting durable, corrosion-resistant stainless steel exhaust headers
  • DIY mechanics and professionals needing a complete, easy-to-install header kit

Core Advantages

  • Premium Durability: Made of high-quality T304 Stainless Steel – resistant to corrosion, rust, and high temperatures for long-lasting performance.
  • Instant Performance Boost: Increases high-flow air, delivering an immediate gain of 10-15 HP/Tq for improved acceleration and power.
  • Precision Construction: TIG-welded CNC machine flanges ensure a tight, leak-free fit and optimal exhaust flow.
  • TRI-Y Style Design: 4-2-1 configuration enhances exhaust scavenging, maximizing engine efficiency and power output.
  • Complete Kit: Includes all necessary hardware and heat-resistant header wrap for a hassle-free installation.
  • 1-Year Warranty: Backed by EGR Performance’s 1-year warranty for peace of mind.

Specifications

Key Specifications

  • Material: T304 Stainless Steel
  • Primary Tube Size: 1.5 inches
  • Collector Size: 2.5 inches
  • Welding: TIG Welded
  • Flange: CNC Machine Flange
  • Style: 4-2-1 TRI-Y
  • Included: Heat-Resistant Header Wrap

Technical Specifications

  • Exhaust Flow: Optimized high-flow design for maximum air intake/exhaust efficiency
  • Compatibility: Fits 10" or 10.5" clutch (see Compatibility List for details)
  • Weld Quality: Precision TIG welding for strength and leak prevention
  • Corrosion Resistance: T304 stainless steel withstands harsh conditions and prevents rust

Complete Package Contents

  • 1 x Pair of TRI-Y Stainless Steel Exhaust Manifold Headers (EGR Performance)
  • Reducers
  • Mounting Bolts
  • Metal Gasket
  • Heat-Resistant Header Wrap
  • Note: No installation instructions included. Contact customer service for support.

Compatibility List (Detailed)

These TRI-Y Stainless Exhaust Headers are compatible with the following vehicles, with noted exceptions:

  • 1964-1970 Ford Mustang (260/289/302 V8 Motor)
  • 1969-1970 Mercury Cougar (260/289/302 V8 Motor)

Manufacturer Vehicle Exceptions & Requirements

  • Will NOT fit vehicles with FMX, C-6, or AOD automatic transmissions
  • May not fit some vehicles with a C-4 transmission and 164-tooth bellhousing
  • Vehicles with 157-tooth bellhousing require additional clearance on the RH side of the bell
  • Will NOT work on 351W motors (due to taller/wider engine dimensions)
  • Will not work with GT40-P cylinder heads
  • Works with 10" or 10.5" clutch; 1968-newer bellhousing requires clearance on the LH side
  • 1969-1970 models may require extra clearance for the steering box
  • Non-HiPo models require additional clearance for clutch linkage

Why Choose This TRI-Y Stainless Exhaust Manifold Headers?

When upgrading your Ford Mustang or Mercury Cougar’s exhaust system, not all headers are created equal. EGR Performance’sTRI-Y Stainless Steel Headers stand out for their premium materials, precision engineering, and proven performance gains – all at a competitive price.

  • No cheap steel – T304 stainless steel ensures longevity, even in harsh driving conditions
  • Direct fit for compatible models (with noted exceptions) – no extensive modifications needed
  • Complete kit with all hardware included – saves time and money on additional parts
  • 10-15 HP/Tq boost – instantly improves your vehicle’s performance and driving experience
  • Dedicated customer support – reach us at service@egrperformance.com for any questions or assistance
  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).

Q1: Will these TRI-Y stainless headers fit my 1967 Ford Mustang with a 289 V8?

A1: Yes! These TRI-Y Stainless Exhaust Manifold Headers are compatible with 1964-1970 Ford Mustang models equipped with 260/289/302 V8 motors. Please check the Compatibility List for transmission/bellhousing exceptions.

Q2: What material are these exhaust headers made of?

A2: These headers are crafted from high-quality T304 Stainless Steel – a corrosion-resistant, high-temperature material that ensures durability and long-lasting performance for your classic Ford or Mercury.

Q3: Do these headers come with a warranty?

A3: Yes! All EGR Performance TRI-Y Stainless Exhaust Headers include a 1-year warranty. For warranty claims or questions, contact our customer service at service@egrperformance.com.

Q4: Will these headers work with my 351W motor?

A4: No. These TRI-Y Headers are specifically designed for 260/289/302 V8 motors and will NOT work on 351W motors (due to the 351W’s taller and wider engine dimensions).

Q5: What is included in the package?

A5: The complete kit includes 1 pair of TRI-Y Stainless Exhaust Headers, reducers, mounting bolts, metal gasket, and heat-resistant header wrap. No installation instructions are included.

Q6: Will these headers fit a Ford Mustang with a C-4 transmission?

A6: They may not fit some vehicles with a C-4 transmission and 164-tooth bellhousing. Vehicles with a 157-tooth bellhousing will require additional clearance on the RH side of the bell.

Q7: Do these headers increase horsepower?

A7: Yes! The optimized high-flow design of these TRI-Y Stainless Headers increases air flow, delivering an instant gain of 10-15 HP/Tq for improved performance.

Q8: Can I use these headers with GT40-P cylinder heads?

A8: No. These exhaust headers will NOT work with GT40-P cylinder heads. Please ensure your vehicle has compatible cylinder heads before purchasing.

Q9: Is customer support available if I have installation questions?

A9: Yes! For any installation questions, compatibility concerns, or other inquiries, contact EGR Performance customer service at service@egrperformance.com.

Q10: Are these headers compatible with 1969-1970 Mercury Cougar models?

A10: Yes! These TRI-Y Stainless Exhaust Headers fit 1969-1970 Mercury Cougar models equipped with 260/289/302 V8 motors. 1969-1970 models may require extra clearance for the steering box.