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Description
Pacemaker | Competition Headers | Holden HK-HT-HG Small Block Chev V8 283-400 | PH5305 L/RPacemaker 4 into 1 Competition Headers Holden HK HT HG Small Block Chev V8 PH5305 L R Maximize the performance of your Small Block Chevrolet powered classic Holden with these Pacemaker Competition Headers. Specifically engineered for the HK, HT, and HG series, these 4 into 1 tuned headers are designed to provide superior exhaust flow for engines ranging from 283 to 400 cubic inches. Whether you are running a street machine or a track oriented build,
Pacemaker 4-into-1 Competition Headers - Holden HK-HT-HG Small Block Chev V8 - PH5305 L/R
Maximize the performance of your Small Block Chevrolet-powered classic Holden with these Pacemaker Competition Headers. Specifically engineered for the HK, HT, and HG series, these 4-into-1 tuned headers are designed to provide superior exhaust flow for engines ranging from 283 to 400 cubic inches. Whether you are running a street machine or a track-oriented build, these headers deliver the high-flow efficiency your V8 demands.
Features:
This product offers the following high-performance features:
- Tuned 4-into-1 Design: Precision-engineered primary lengths ensure optimal exhaust scavenging and maximum power output.
- Slant Plug Compatibility: Designed to clear slant plug cylinder heads, providing flexibility for various performance head setups.
- High-Flow 3" Outlet: Large 76mm outlet minimizes backpressure, allowing your SBC motor to breathe freely.
- Automatic Transmission Fitment: Compatible with Powerglide and Turbo 400 automatic transmissions (see important notes regarding T400).
Product Specifications for PH 5305
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5305 | Gasket | DSF 9 |
| P/Steering | No | Primary Pipe | 1¾" (44mm) |
| Air Con | N/A | Secondary Pipe | - |
| Oxy Sen | N/A | Outlet | 3" (76mm) |
| E.G.R | N/A | Y Branch | N/A |
| Fitting Time | 3 Hrs | Design | 4 into 1 (Tuned) |
Important Notes:
- Will fit slant plug heads and Powerglide automatic transmissions.
- Will fit Turbo 400 automatic only if the vehicle floor has been modified/cut for correct fitment.
- Requires original engine mounting spacers or PACEMAKER spacers (Part # PEMP 307). Spacers must be fitted to the correct side (RH is 1/4” higher than LH).
- Fits LH hydraulic clutch conversions only.
- Will not fit: Column automatic models or vehicles equipped with Power Steering.
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 PH5305 L/R
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| Holden | Kingswood / Monaro / Belmont | 1968 | 1971 | Sedan / Coupe / Ute / Wagon | HK, HT, HG | Small Block Chev V8 (283-400) | Manual & Floor 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 571 reviews
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Product Reviews
★★★★★ 5
Female with no knowledge about cars seal of approval!
Size: For Mazda 3 14-18 2.0L/2.5L|Mazda 6 14-21 2.5L
Perfect for my 2016 Mazda3. I am a young female with zero tools and zero knowledge about cars. My dealer was asking over $60 to change these out, and after a 5-minute course at YouTube University, I was able to do everything myself in under 15 minutes. It’s my crowning achievement of 2026. I recommend gloves when you go to change out the engine and make sure it’s wiped out and cleaned before you put the new one in! But other than that, it’s honestly just popping a few things out, changing the filters, and then popping them back into place. They look almost identical to the filters that were already in there. There was no wrestling with making them fit because they just slid easily into place. Great buy and unbeatable price if you have a few minutes to spare to do it yourself!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
★★★★★ 5
Easy Install - Looks like the Original
Size: For Ascent 19-26|Crosstrek 2.0L 18-22/2.5L 21-22
Both of these filters, cabin and engine are really easy to install at home with NO tools needed and at a fraction of the price that dealers charge. These filters are for a Subaru Impreza and look almost identical to the originals and fit perfectly.
Cabin filter installation is by dropping the glove box - detach damper rod and unclip sides. Unclip filter cover behind glove box and remove/replace filter checking airflow direction is the same as the old filter. Reinsert glove box and push up to locate side clips. Re-affix damper rod and you're done.
Engine filter is equally easy. Unclip air filter housing (not necessary to remove entirely) slide out old filter and insert new on in same orientation. Re-attach clips and done.
Took me 10 minutes to change both filters. Longest part was emptying all the cr*p out of my glove box.
Good quality filter, easy to install and saves time and money.
I bought a second set for a Mazda CX-5 non turbo and quality was the same. Installation exactly the same as above for the Subaru
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Reviewed in the United States on February 5, 2026
★★★★★ 5
Worked fine
Size: For Palisade 2020-2026
Great fit and value. Installation was easy.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Good Filter
Size: For Durango 11-26|Grand Cherokee 11-22 etc.
Fit as it should and works as it should. Good value.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Never Pay Again. Easy and affordable for your health and the vehicle.
Size: For Sonata Gas 2015-2019
Way easier to replace than I thought. I’ve done a cabin filter before, but never the engine air filter. After this, I’ll never pay someone to do it again.
I actually went into a store first, and the cabin filter alone was the same price as this set that includes both the cabin and engine filters. Since I needed both, this was a no-brainer.
Install was quick and straightforward, even for someone who’s not a "car guy".
I can’t speak scientifically on how well they filter, but they’re definitely better than the mouse-destroyed ones that were in this car before. Huge improvement.
Highly recommend if you’re looking to save money and do it yourself. They fit well and seemed to be exactly what was needed and expected.
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Reviewed in the United States on April 15, 2026
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