3-bolt header flange/reducer connects to standard header flanges, Outlet uses V-band connection and includes weld flange for your exhaust, 2.5-inch inlet/2.0-inch outlet flange made from mild steel, Includes 3-bolt flange gaskets, hardware, and V-band clamps, Sold as a pair 3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung,2.5/2.0-inch Sku # 9302508 Mfr. Part # 9302508 Condition New Brand Speedway Motors Sold Pair Details
- Traditional 3-bolt header flange bolt pattern for 2.5-inch header collectors
- 2.0-inch outlet features reusable V-band style connection with weld flange and clamp
- Manufactured from mild steel materials with a raw finish ready for coating
- Oxygen sensor bung welded into tube with O2 sensor plug included
- Sold as a pair and includes mounting hardware and 3-bolt flange gaskets
Mate Your Headers to Your Exhaust with Easily Reused V-band Clamping System
The typical 3-bolt header collector has been around decades, and while it is a serviceable connection between your header and exhaust system, anyone that has ever used one knows what a pain they can be. From hardware that strips (or loosens and falls off) to gasket surfaces that require scraping and new gaskets every time you disconnect the exhaust from your headers, it is no wonder that many header manufacturers have updated their header designs to ball socket connections or slip on collectors with retaining tabs. But if your existing headers are of the 3-bolt flange design we have a solution; a 3-bolt header flange that transitions into the popular reusable V-band connection.
Made from mild steel, our 2-1/2-inch diameter 3-bolt exhaust flange features a reduced 2.0-inch V-band flange outlet for connection to your exhaust or turbo system hot side. Once the V-band weld flange is added to your exhaust it is simply a matter of removing the V-band clamp for disconnection of your exhaust. No more gaskets to scrape and replace, no more exhaust flange bolts or nuts to deal with, just a quick single clamp to remove. V-band flanges are known for being reusable without the need for a gasket, as their design provides perfect alignment between the two flanges every time.
Our 3-bolt exhaust flange transition pipe also includes an oxygen sensor bung pre-installed, saving you time and frustration. The oxygen sensor bung can be used for your Shop Retrofit EFI Systems wideband oxygen sensor, or the sensor that is included in an Shop AFR Gauges. Many dyno tuners run a wideband oxygen sensor for dyno tuning as well, so having the O2 sensor bung ready at hand makes things easy. An O2 sensor plug is included for each O2 sensor bung when the bung is not in use or not required, so there’s no need to screw in an old spark plug! Just thread in the included oxygen sensor plug. See our full line of Shop Speedway Motors Header Flange Reducers if you’re looking for additional inlet/outlet sizes.
Specs Overall Length 3.85" Centerline of Holes 3.54" Collector Diameter 2-1/2 Inch Flange Thickness .250" Diameter Big End 2.50" Diameter Small End 2.00" Gasket(s) Included Yes Hardware Included Yes Material Type Mild Steel Finish Raw Sold in Quantity Pair Flange Style 3-Bolt Oxygen Sensor Bung Included Yes Related Items / Suggested Parts QA1 9072-105 Anti Seize Anti-Seize Lubricant, 1 oz Oxygen Sensor, Sniper EFI or Terminator X Series & Tool Replacement NTK Wideband Oxygen Sensor & Tool Powerbuilt 648442 Oxygen O2 Sensor Socket, 1/2 In, Dr, 7/8 / 22mm Innovate Motorsports 37370 Bosch LSU 4.2 5-Wire, O2 Sensor FiTech 60017 FiTech Ultimate LS Oxygen Sensor, 26 Inch, 6 Pin Oxygen Sensor Weld-On Bung and Plug Kit, M18-1.5, Stainless Steel FiTech 60012 O2 Oxygen Sensor Bung Kit Tech Support We\'re here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
