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ARH headers feature 3/8" thick Stainless Steel flanges dressed with hand-ported inlets
Note: ARH designed these headers
mainly due to the intricate flange design which requires CNC machining for clearance around the spark plugs and cylinder head bolts
with or without AC and manual or automatic transmissions
0L American Racing Headers long systems were designed to bolt-on to your factory axle-back or any aftermarket axle-back
Mustang 5.0L BOSS 2012-2013 Long System Apparel ARH headers feature 3/8" thickThe American Racing Headers Long System for the 2012 to 2013 5. 0L Boss Mustang takes this car's amazing road course performance to another level. Our Long System provides substantial performance benefits and allows you to keep the Boss side pipes. Available in 1 3 4", 1 7 8" and 2" primaries. Expect 28 RWHP gains before tuning and great sound. Product features on this system includes: 100% Made in the USA Never Outsourced Made entirely of 304
