- Exhaust Systems
- Gaskets - Header & Collector
- RPC Header Reducers and Collector Gaskets
RPC Exhaust Header Reducers are a must when updating your exhaust system or just simply adding or replacing a set of headers. These header reducers are made from heavy gauge aluminized tubing and designed for headers with a 3-bolt triangular flange. RPC Collector Gaskets will keep all exhaust gases flowing through your headers, not around the flange, for a leak proof seal. Each header collector gasket is made of the same copper high-temperature material. These gaskets are 0.0400" thicknesses.
Filter By Vehicle
Filter Results
Filter By Vehicle
AVAILABILITY
PART TYPE
PART TYPE
BRAND
BRAND
Part Category
Vendor Part Number
Part Fitment
RATING
PRICE
3-Hole Flange Header Reducers with Welded Ring
Zinc Steel Header Reducer Header Collector Diameter 2.5" Exhaust/Pipe Diameter 2" 2/pkg
View Details
$36.99
Estimated to ship direct from manufacturer on 07/30/26, pending manufacturer availability.
Lowest Price Guarantee
Zinc Steel Header Reducer Header Collector Diameter 3" Exhaust/Pipe Diameter 2.25" 2/pkg
View Details
$36.99
Ships Today
Lowest Price Guarantee
Zinc Steel Header Reducer Header Collector Diameter 3.5" Exhaust/Pipe Diameter 2.5" 2/pkg
View Details
$44.99
Estimated to ship direct from manufacturer on 07/30/26, pending manufacturer availability.
Lowest Price Guarantee
2.5" Copper Gaskets
Copper Collector Gasket Inside Diameter: 2.5" Thickness: 0.0400" 3-Hole Triangular With Bolt Kit
View Details
$30.99
Estimated to ship direct from manufacturer on 07/30/26, pending manufacturer availability.
Lowest Price Guarantee
Copper Collector Gasket Inside Diameter: 2.5" Thickness: 0.0400" 3-Hole Triangular Without Bolt Kit
View Details
$21.99
Estimated to ship direct from manufacturer on 07/30/26, pending manufacturer availability.
Lowest Price Guarantee
3" Copper Gaskets
Copper Collector Gasket Inside Diameter: 3" Thickness: 0.0400" 3-Hole Triangular With Bolt Kit
View Details
$32.99
Estimated to ship direct from manufacturer on 07/30/26, pending manufacturer availability.
Lowest Price Guarantee
Copper Collector Gasket Inside Diameter: 3" Thickness: 0.0400" 3-Hole Triangular Without Bolt Kit
View Details
$23.99
Estimated to ship direct from manufacturer on 07/30/26, pending manufacturer availability.
Lowest Price Guarantee
3.5" Copper Gaskets
Copper Collector Gasket Inside Diameter: 3.5" Thickness: 0.0400" 3-Hole Triangular With Bolt Kit
View Details
$37.99
Estimated to ship direct from manufacturer on 07/23/26, pending manufacturer availability.
Lowest Price Guarantee
Copper Collector Gasket Inside Diameter: 3.5" Thickness: 0.0400" 3-Hole Triangular Without Bolt Kit
View Details
$23.99
Estimated to ship direct from manufacturer on 07/23/26, pending manufacturer availability.
Lowest Price Guarantee