The O351 header set fits Oldsmobile 350 engines in the late 60’s to early 70’s Oldsmobile Cutlass and similar GM A-body applications. The O351 fits tight to the engine block, clearing the inner fender wells and A-arms with room to spare.
NOTE: The O351 header is not compatible with Oldsmobile Rocket engine applications.
Includes all hardware necessary for installation.
Engine: Oldsmobile 350 V8
Primary Tube Diameter: 1-5/8″
Collector Diameter: 2-1/2″
- 16-Gauge Primary and Collector Tube Thickness
- 3/8″ Thick Flange
- Patented Flange Design Requires NO Gaskets
- Tightest Fitting Header Available Anywhere!
- Made in the USA
- Header Bolt Set
- Collector Reducer Set
Our Ceramic Coating is recommended for every vehicle application and is the default finish selection choice above. To meet high standards of quality, We apply a multi-layer inside and outside aluminized ceramic coating in-house and then polish the coating to a high luster. This aerospace and military-grade technology adds excellent protection to your headers while offering the benefit of thermal control in your engine bay. It also improves cylinder scavenging of exhaust gases and increases the longevity of your header investment.