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Description
Pacemaker | Tri-Y Performance Headers | Holden HJ HX HZ Post E.G.R Red Motor 173-202 | PH5005 Kit HJ-HZPacemaker Tri Y Performance Headers Holden HJ HZ Red Motor (Post E. G. R) PH5005 Kit HJ HZ Enhance the performance of your classic Holden HJ, HX, or HZ with these premium Pacemaker Tri Y headers. Specifically designed for the 173 and 202 Red Motor straight six engines, these headers are engineered for "Post E. G. R" (Exhaust Gas Recirculation) compliance. The Tri Y design is perfected to provide a significant boost in low to mid range torque and
Pacemaker Tri-Y Performance Headers - Holden HJ-HZ Red Motor (Post E.G.R) - PH5005 Kit HJ-HZ
Enhance the performance of your classic Holden HJ, HX, or HZ with these premium Pacemaker Tri-Y headers. Specifically designed for the 173 and 202 Red Motor straight-six engines, these headers are engineered for "Post E.G.R" (Exhaust Gas Recirculation) compliance. The Tri-Y design is perfected to provide a significant boost in low-to-mid range torque and improved exhaust flow, making it an essential upgrade for both restored cruisers and workhorses alike.
Features:
This product offers the following high-performance features:
- Tri-Y Design: Optimized exhaust scavenging to deliver superior mid-range power and torque.
- E.G.R Compatible: Specifically manufactured to suit Post E.G.R Standard Red Motor 6-cylinder engines found in HJ through HZ models.
- High-Quality Construction: Features 1½" (38mm) primary pipes and 2" (51mm) secondary pipes leading to a 2¼" (57mm) outlet.
- Broad Component Clearance: Designed to clear Power Steering and various Air Conditioning units including Delco, Fridgidaire, and Sankyo.
Product Specifications for PH5005 Kit HJ-HZ
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5005 | Gasket | DSF 2 |
| P/Steering | Yes | Primary Pipe | 1½" (38mm) |
| Air Con | Yes | Secondary Pipe | 2" (51mm) |
| E.G.R | Yes | Outlet | 2¼" (57mm) |
| Fitting Time | 1½ Hrs | Design | TRI-Y |
Important Notes:
- Air Conditioning: This system is compatible with Delco, Fridgidaire, and Sankyo air conditioner units.
- Transmission Warning: These headers will NOT fit vehicles equipped with Hydromatic or Powerglide automatic transmissions.
- Engine Type: Designed specifically for Post E.G.R Red Motor 6-cylinder variants (173 and 202).
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| Holden | Kingswood / Belmont / Monaro | 1974 | 1980 | Sedan / Wagon / Ute / Panel Van | HJ, HX, HZ | Red Motor 173 / 202 | Manual & Auto | RWD |
Warranty Information
| Product | Warranty Period |
|---|---|
| Pacemaker Headers | Two (2) years. |
| Pacemaker King Brown 4x4 Exhaust systems | Five (5) years. |
| Pacemaker Sports exhaust systems | Five (5) years. |
| Fabrication products and accessories | One (1) year. |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Bringing a 1976 MG Midget to the modern world!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
I've been restoring a 1976 MG Midget barn find. I bought some Sinless liner to help make the car rattle less and feel more solid.
This product is easy to cut, easy to install, and extremely sticky. I used it to line the trunk, the interior, and even some under the hood of the old MG. The adhesive stands up to the brutal temperature of the engine bay, and when (by accident) some fuel spilled onto the foam, it didn't fall apart or turn to mush.
Thanks to Siless, the MG now feels like a modern car. The floor pans feel much more solid, the doors make a heftier thud when you close them, and the trunk no longer sounds like a percussion instrument when you touch it.
If you know what you're doing, this product will transform the feel of a car. I found that 36 sq ft was enough for my MG Midget, but for a bigger car I would want more. The pattern on the back helped me to cut perfectly measured squares and rectangles. The foam itself doesn't have a strong odor, it works super well, and has held up to several months of changing temperatures (in the Midwest US.)
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Reviewed in the United States on November 11, 2025
★★★★★ 5
Excellent Car Sound Deadening and Heat Insulation Solution
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
If you're looking for a high-quality car sound deadening and heat insulation material, then the Siless Liner 157 (4 mm) mil 36 sqft is definitely worth considering. This product is designed to offer superior noise reduction and heat insulation for your car, making your driving experience more comfortable and enjoyable.
The closed-cell foam material used in this product is of premium quality, and it effectively blocks out external noise and vibrations. This means you can enjoy a quieter and more peaceful ride, even on noisy roads. In addition, the Siless Liner 157 also provides excellent heat insulation, which can help keep your car cooler in hot weather.
One of the best things about this product is that it's very easy to install. You don't need any special tools or equipment, and the material can be easily cut to fit any shape or size. It's also very lightweight and flexible, which makes it easy to work with.
Overall, the Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat is an excellent choice for anyone looking to improve the comfort and performance of their car. It's a high-quality product that delivers on its promises, and it's definitely worth the investment.
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Reviewed in the United States on March 12, 2023
★★★★★ 4
Heavy-Duty That Works!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
This extreme sound deadening mat performs well for reducing road noise and vibration. It feels dense and adheres securely when properly applied. Once installed, it noticeably improves interior quietness.
Overall, it’s a strong choice for more serious sound insulation projects.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Good product, quite sticky I must say.
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Worked for my van insulation
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Good stuff
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Good stuff, easy to use, self adhesive backing contours around curves easily and works great.
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Reviewed in the United States on April 29, 2026