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PLM 4-1 Hood Exit Race Header - B-series

Private Label MFG Power Driven B-Series hood exit race header (4-1 Megaphone) features a true 4-1 Megaphone merge to create equal exhaust flow. This header delivers the best peak horsepower gains while utilizing a 2 piece design. This is ideal for all forms of competition; Autocross, Drag racing and road racing.

Recommended for 1.8-2.2L engine displacements.

Vehicle Applications: 88-91 Civic/CRX (B-swap + traction bar a must), 92-00 Civic (B-swap), 93-97 Delsol (B-swap), 90-93 Integra (traction bar a must), and 94-01 Integra.


  • Made of 304 Brushed Stainless steel(
  • Hand TIG Welded
  • 02 extension needed
  • Modifications required for A/C & P/S usage
  • CNC-ed machined manifold flange
  • One year warranty
  • 18G on the 304 S/S ; measured at .049" to .050"
  • OEM spec header gasket included
  • Exhaust heat shield trim included
  • Pre-assembled (two piece design)
  • Half-core radiator must be used with a slim fan
  • For off-road use only  - not carb legal in CA.

PLM 4-1 Hood Exit Race Header - B-series

Regular price Sale $689.99 Sale price MSRP $999.00
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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