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PLM H-series 4-1 RamHorn Header
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.


  • 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

PLM 4-1 RamHorn Header - H-series

Regular price Sale $475.00 Sale price MSRP $525.00
Free Shipping
Free standard shipping applies to this item within the continental United States. Orders shipped to Alaska, Hawaii, Virgin Islands, Canada, Puerto Rico, Guam, and PO/APO/FPO boxes are subject to additional shipping charges.
Ships: 1-5 business days
This is an estimated ship date once your order is placed from JHPUSA. Ship dates do not include weekends and holidays.
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