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Ultimate Headers 321 Stainless Steel Headers
5 Customer Reviews
Finite Element Analysis (FEA) processes are used to create Ultimate Headers and the unique Ultimat
Finite Element Analysis (FEA) processes are used to create Ultimate Headers and the unique Ultimate Flanges with their signature, high-tech, ribbed reinforcements that reduce weight, improve flange cooling, and lessen heat-induced warpage; while providing the required clamping forces to eliminate leakage. Ultimate 321 Stainless Steel Headers' tight radius, investment-cast, 316L stainless steel elbows immediately turn the header tubes away from the exhaust ports with a radius smaller than the tube diameter (which can't be done using a tube bender); holding the header tubes close to the block—perfect for engine swaps. Investment casting also maintains the desired wall thickness and avoids the thinner sidewall created by tube bending at the point where exhaust gas temperature and volume are at their highest.
These benefits, combined with the advanced Cometic MLS (multi-layer stainless steel) header gaskets included with each set of headers, give Ultimate Headers 321 Stainless Steel Headers the leading edge when it comes to adding a total performance-enhancing exhaust system.
Features include:
* Patented design
* Includes premium corrosion and heat-resistant ARP 12-point, 300 grade stainless steel bolts and washers
* Jig fixture, TIG-welded for precise quality control
* Easy to install
* Header tubes are mounted high and tight for a compact, space efficient package away from steering shafts and frame rails
* Eye-catching flanges add dramatic improvement to the engine compartment
* Available styles include rear-dump and block-hugger designs
* Available in a variety of finishes, including mill, satin, mirror polish, ceramic coated silver, and ceramic coated black
*Ultimate Headers Cast Header Flanges or Extreme Low-Profile Clamps (both sold separately) are recommended for the end of the collectors
Headers, LS Engine Swap, Mid-Length, Stainless Steel, Satin Finish, Buick, Chevy, Pontiac, Oldsmobile, Pair
Part Number: JBC-101012
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
Headers, LS Engine Swap, Mid-Length, Stainless Steel, Polished, Buick, Chevy, Pontiac, Oldsmobile, Pair
Part Number: JBC-101013
Not Yet Reviewed
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
Headers, LS Engine Swap, Mid-Length, Stainless Steel, Silver Ceramic Coated, Buick, Chevy, Pontiac, Oldsmobile, Pair
Part Number: JBC-101014
Not Yet Reviewed
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
Headers, LS Engine Swap, Mid-Length, Stainless Steel, Black Ceramic Coated, Buick, Chevy, Pontiac, Oldsmobile, Pair
Part Number: JBC-101015
Not Yet Reviewed
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
Headers, LS Engine Swap, Long Tube, Stainless Steel, Mill Finish, Buick, Chevy, Oldsmobile, Pontiac, Pair
Part Number: JBC-102191
Not Yet Reviewed
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
Headers, LS Engine Swap, Mid-Length, Stainless Steel, Satin Finish, Buick, Chevy, Oldsmobile, Pair
Part Number: JBC-101082
Not Yet Reviewed
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
Headers, LS Engine Swap, Mid-Length, Stainless Steel, Silver Ceramic Coated, Buick, Chevy, Oldsmobile, Pair
Part Number: JBC-101084
Not Yet Reviewed
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
Headers, LS Engine Swap, Long Tube, Stainless Steel, Mill Finish, Buick, Chevy, Oldsmobile, Pontiac, Pair
Part Number: JBC-102081
Not Yet Reviewed
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
Headers, LS Engine Swap, Mid-Length, Stainless Steel, Black Ceramic Coated, Buick, Chevy, Oldsmobile, Pair
Part Number: JBC-101085
Not Yet Reviewed
Estimated Ship Date: Mar 19, 2026 if ordered today
Estimated Ship Date: Mar 19, 2026 if ordered today
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