Aftermarket Car Parts -Private Label Mfg

PLM Power Driven B-Series Hood Exit Race Header with 4-1 Megaphone B18 B20

PLM Power Driven B-Series Hood Exit Race Header with 4-1 Megaphone B18 B20 - Main image
$598.5 $950 In stock

Category: Motor Vehicle Parts

PLM Private Label Mfg. Power Driven B-Series hood exit race header features a 4-1 Merge Collector & Megaphone, 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 1.8L-2.2L engine displacements.



Vehicle Application:


  • 1992 - 2000 Civic EG EK
  • 1993 - 1997 Honda Del Sol
  • 1994 - 2001 Acura Integra DC DC2
  • 1988 - 1991 Honda CRX with any B-Series engine swap with aftermarket traction bar
  • 1990 - 1993 Acura Integra with aftermarket traction bar
  • Honda B-Series Engines B16 B18 B20

Key Features:


  • HEADER IS INTENDED TO BE OFF ROAD USE ONLY
  • NOT CARB LEGAL IN CALIFORNIA
  • Brand New
  • Made of 304 brushed stainless steel
  • Hand TIG Welded
  • Modification needed for A/C and P/S
  • usage O2 extension needed
  • CNC machined manifold flange
  • One year warranty
  • 18 gauge, 304 stainless steel
  • Includes OEM spec header gasket ($20+ value)
  • Includes exhaust heat shield trim ($50+ value)
  • Half core radiator must be used with slim fan
  • Comes pre-assembled (two piece design)
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Penelope ★★★★★

The merge collector design really smoothed out my power band all the way to redline, and the welds on the primaries look clean and consistent. Bolted right up to my B18 with no fitment issues, and the car pulls noticeably harder up top.

Ryan V. ★★★★★

The megaphone outlet on this 4-1 collector really woke up my B18's top end. Installation was straightforward, and the equal flow design seems to smooth out the powerband nicely.

Miles Q. ★★★★★

I’ve had this header on my B20 for a few weeks now, and the 4-1 megaphone really wakes up the top end—definitely pulls harder past 5k RPM. Fitment was tight getting it through the hood, but the equal flow design was worth the extra effort.