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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
PLM 4-1 RamHorn Header - H-seriesPLM Power Driven H series Ramhorn 4 1 header features a true step up design. This 2 piece design delivers low to mid range power while maximizing engine compartment space for this exhaust manifold. The header is ideal for all forms of competition; auto cross, drag racing and road racing. Recommended for Preludes and H swapped cars (H2B). Note: You will need an aftermarket front cross member or have it notched off to fit in Preludes Accords. When
PLM Power Driven H-series Ramhorn 4-1 header features a true step up design. This 2-piece design delivers low to mid range power while maximizing engine compartment space for this exhaust manifold. The header is ideal for all forms of competition; auto-cross, drag racing and road racing.Recommended for Preludes and H-swapped cars (H2B).
Note: You will need an aftermarket front cross member or have it notched off to fit in Preludes/Accords.
When installing, the height of the header will have to be adjusted then locked in with double nut system.
Features
- Long tube header
- Made from 18-gauge 304 stainless steel
- True 2.5 inch collector
- Hand TIG welded
- CNC-ed machined manifold flange
- One year limited warranty
- Measures at .049" to .050"
- Gasket, donut, and hardware included
- Two piece design
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
4.9 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Boating maintenance
Perfect replacement parts for your scheduled maintenance, great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 25, 2025
★★★★★ 5
worked great at fair price
works fine on my 1994 volvo penta 3.0 GL the main gasket was wrong, but my 3.0 GL does not have a gasket, the other parts appear to be universal
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Reviewed in the United States on June 5, 2025
★★★★★ 4
Good fit
Worked well with no problems.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Great replacement kit
Called around for quotes to get them replaced and everyone was quoting over $2k just for bellows. Figured I’d give it a try. The rubber is good quality and feels soft. Time will tell but this is an easy job if you’re mechanically inclined. Make sure you replace the plastic water pickup fitting while you’re at it. Found mine to be cracked on disassembly and had to wait for a new one. Should be a easy 3-4 hour job if your not doing the bearing and only doing bellows
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Reviewed in the United States on August 26, 2024
★★★★★ 3
Just ok
Qualities OK, but for Marine applications might want better
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Reviewed in the United States on August 3, 2025
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