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Description
Pacemaker | Tri-Y Design Exhaust Headers | Holden HK HT HG Small Block Chev 283–400 V8 | PH5302 L/RPacemaker Tri Y Design Exhaust Headers Holden HK HT HG PH5302 L R Upgrade your classic Holden with these premium Pacemaker Tri Y design exhaust headers, specifically engineered for the Small Block Chevrolet V8 engine swap into HK, HT, and HG models. These headers provide a significant boost in low to mid range torque and engine efficiency, delivering that signature V8 rumble. Note: Will not fit with Power Steering. Please review starter motor and
Pacemaker Tri-Y Design Exhaust Headers - Holden HK-HT-HG - PH5302 L/R
Upgrade your classic Holden with these premium Pacemaker Tri-Y design exhaust headers, specifically engineered for the Small Block Chevrolet V8 engine swap into HK, HT, and HG models. These headers provide a significant boost in low-to-mid range torque and engine efficiency, delivering that signature V8 rumble. Note: Will not fit with Power Steering. Please review starter motor and mounting spacer requirements before installation.
Features:
This product offers the following high-performance features:
- Tri-Y Header Design: Optimized pipe routing to maximize exhaust scavenging, specifically suited for the Chevrolet 283-400 Small Block V8.
- Broad Compatibility: Fits slant plug heads and Powerglide automatic transmissions without modification.
- Robust Construction: Built to withstand high heat and performance street use while maintaining a precise fit within the classic Holden engine bay.
Product Specifications for PH5302 L/R
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5302 | Gasket | DSF 9 |
| P/Steering | No | Primary Pipe | 1⅝" (41mm) |
| Air Con | N/A | Secondary Pipe | 2" (51mm) |
| Oxy Sen | N/A | Outlet | 2¼" (57mm) |
| E.G.R | N/A | Y Branch | N/A |
| Fitting Time | 3 Hrs | Design | Tri-Y Design |
Important Notes:
- Mounting Spacers: Must use original engine mounting spacers or Pacemaker PEMP 307. Ensure correct side fitment (RH is 1/4" higher).
- Starter Motor: Fits factory starters on 153-tooth gears. For 168-tooth setups, an aftermarket hi-torque starter is required.
- Fitment Warnings: Will not fit column automatics without linkage modification, and Turbo 400 requires floor modifications.
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
Vehicle Applications for PH5302 L/R
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| Holden | Monaro / Kingswood | 1968 | 1971 | Sedan / Coupe / Ute | HK-HT-HG | Small Block Chev (283-400) | Manual & Automatic | 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
4.5 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Cute but one is broken
Color: Brown, Size: 35.7"W x 10.3"D x 1.8"H, Set of 2, Color: Brown, Size: 35.7"W x 10.3"D x 1.8"H, Set of 2
Update: they sent me new ones and they seem to be holding up, thank you!
I really wanted to love these but one of them came bent so I can’t use it because I’m worried it’s going to ruin the wall. It’s slanted so far down but the one that didn’t come bent works great and looks really cute
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
★★★★★ 5
A birthday gift that made someone happy.
This was bought as a birthday gift, good quality, very sturdy, and the recipient loved it highly recommend this product.
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Reviewed in the United States on April 25, 2026
★★★★★ 1
Issues with mounting the shelves, big time
Color: Brown, Size: 55.1"W x 10.3"D x 1.8"H, Set of 2
I bought the 55 inches floating shelves. I have an area above my linen cabinet that I wanted to utilize for storage and books in my hall. I did my measuring, figured out spacing. Marked everything off to do 3 total shelves (bought two boxes). A couple of spots screwed into a stud, and the others I had to install the plastic mount things. I had used those before so I just did the predrill then tapped them in, finished off by screwing the mount flush with the wall. I grabbed the first bracket and decide to start with a screw that had one of the inset mount things (sorry the correct term is escaping me). It never once occurred to me to check that the plastic mount and screw would not work. We’ll surprise! I tried and tried to get the screw to screw thru the mount, the mount is the rigid plastic thoe that is supposed to split when the screw goes through. Well something wasn’t engineered properly on the mounts cuz they would not thread a screw. They would not split. I even went into my garage and tried different screws I had to see if maybe it was just too big…or something. Then I started just prying it apart and could not get it to split like it’s supposed to, the tip piece broke off before the piece split. I have never had this situation before. I now have a bunch of these, that leave huge holes in my wall, where I measured out for a shelf to go.
I’m not a huge DIYer so now I’m trying to figure out if I can salvage this situation but I’m afraid that if I get different mounts they will be too small for the already created holes, or they will fit the hole but because it’s screwing into dry wall, the drywall already has threads from the other mount, will it strip if the threads aren’t 100% the same. Oooooor am I going to have to patch up and paint that wall, then buy new mounts and attempt to try again….which I will now have to set the shelves at a different height so I don’t screw into the same holes I patched since I don’t trust them…..ugh. I practically want to cry. lol.
So if I could give this negative stars I would! I feel stupid due to these having such great reviews by others. Comments of how easy they were to install. I will also mention that a few others mentioned the metal bracket that is mounted to the wall then the shelf slide onto is very flimsy. I could bend it side to side with my hands. The only reason I decided it would be ok is that there are a total of 8 screws in the mount, figured it would be stable enough.
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Reviewed in the United States on September 14, 2025
★★★★★ 5
Was so easy to put up.
Love it
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Decent Quality. Look Great
Color: Brown, Size: 35.7"W x 10.3"D x 1.8"H, Set of 2
These are easy to install and the shelf has a good quality look. The only thing lacking is the quality of the bracket. The arms are thin metal and I feel like it won’t hold much weight.
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Reviewed in the United States on December 4, 2025
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