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⚠️ Due to high order volume, please allow 2-3 business days for order processing. Expedited orders (UPS Next Day, 2-Day, and 3-Day) will ship the same day if received before 12:00 PM Pacific Time. Thank you for your patience and understanding. ⚠️
⚠️ Due to high order volume, please allow 2-3 business days for order processing. Expedited orders (UPS Next Day, 2-Day, and 3-Day) will ship the same day if received before 12:00 PM Pacific Time. Thank you for your patience and understanding. ⚠️
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Flanges & Gaskets - Head Flanges

Our Exhaust Manifold Head Flanges are precision machined from 304 Stainless Steel or 1018 Mild Steel Plate and are offered in a variety of common head flange sizes for GM, Honda/Acura, Mitsubishi, and Nissan applications, Ace Race Parts Head Flanges are an affordable option for fabricators and end users alike.... Read More
Exhaust Manifold Flange for GM LS1 / LS2 / LS3 / LS6 / LS9 (Set of 2 Flanges) 304 Stainless

Exhaust Manifold Flange for GM LS1 / LS2 / LS3 / LS6 / LS9 (Set of 2 Flanges) 304 Stainless

SKU 27210
$ 115.00 - $ 115.00
$ 115.00
$ 115.00
$ 115.00
25+ in stock

Are you looking for a high quality and affordable set of 304 Stainless Steel Head Flanges for your LS? Look no further! Ace Race Parts' version of ...

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Honda D-Series Exhaust Manifold Flange Mild Steel (Ver.1) - Ace Race Parts Sold out

Honda D-Series Exhaust Manifold Flange Mild Steel (Ver.1)

SKU 37203
$ 43.50 - $ 43.50
$ 43.50
$ 43.50
$ 43.50
Out of stock

Our mild steel head flanges are precision cut and machined out of 1/2" thick plate to minimize warping during the welding process. DETAILED SPECIFI...

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Honda D-Series Exhaust Manifold Flange Mild Steel (Ver.2) - Ace Race Parts

Honda D-Series Exhaust Manifold Flange Mild Steel (Ver.2)

SKU 37203-B
$ 43.50 - $ 43.50
$ 43.50
$ 43.50
$ 43.50
25+ in stock

Our mild steel head flanges are precision cut and machined out of 1/2" thick plate to minimize warping during the welding process. DETAILED SPECIFI...

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Honda K-Series Exhaust Manifold Flange Mild Steel - Ace Race Parts Sold out

Honda K-Series Exhaust Manifold Flange Mild Steel

SKU 37205
$ 43.50 - $ 43.50
$ 43.50
$ 43.50
$ 43.50
Out of stock

Our mild steel Honda exhaust flanges are precision cut and machined out of 1/2" thick plate to minimize warping during the welding process.DETAILED...

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Honda/Acura B-Series Exhaust Manifold Flange Mild Steel - Ace Race Parts
Sold out

Honda/Acura B-Series Exhaust Manifold Flange Mild Steel

SKU 37202
$ 43.50 - $ 43.50
$ 43.50
$ 43.50
$ 43.50
Out of stock

Our mild steel head flanges are precision cut and machined out of 1/2" thick plate to minimize warping during the welding process.DETAILED SPECIFIC...

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Mitsubishi 4G63 Exhaust Manifold Flange Mild Steel - Ace Race Parts

Mitsubishi 4G63 Exhaust Manifold Flange Mild Steel

SKU 37201
$ 43.50 - $ 43.50
$ 43.50
$ 43.50
$ 43.50
Only 4 left!

Our mild steel head flanges are precision cut and machined out of 1/2" thick plate to minimize warping during the welding process. The Mitsubishi 4...

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Nissan KA24 Exhaust Manifold Flange Mild Steel - Ace Race Parts

Nissan KA24 Exhaust Manifold Flange Mild Steel

SKU 37204
$ 43.50 - $ 43.50
$ 43.50
$ 43.50
$ 43.50
Only 15 left!

Nissan KA24 Exhaust Head FlangeTHICKNESS:1/2" (0.500")MATERIAL:Mild SteelAPPLICATIONS:Fits all Nissan KA24 Motors DETAILED SPECIFICATIONS: