American Racing: Jeep 1998-2006 (TJ 4.0L) Long System Headers, 1-5/8" x 3" Cats:With Cats we will fine-tune our wheel

we will fine-tune our wheel designs specifically for your vehicle application to produce the most lightweight and aesthetically pleasing design

Vehicle inspection notes

and the Nick Williams Performance drive-by-wire throttle bodies come complete with stepper motor and electronics installed

By carefully analyzing and understanding the air path to the engine and engine operation under a range of driving conditions

The dual valve addresses crankcase pressure building due to lack of intake manifold vacuum under acceleration and intake manifold drops to zero due to reversion pules that occur under acceleration by always providing a near constant evacuation and flush flow through the crankcase without venting to the atmosphere

American Racing: Jeep 1998-2006 (TJ 4.0L) Long System Headers, 1-5/8" x 3" Cats:With Cats we will fine-tune our wheelAmerican Racing Headers: Jeep 1998 2006 (TJ 4. 0L) Long System, 1 5 8" x 3" The venerable TJ Jeep from 1998 2006 was our most recent target for high quality headers and exhaust components. Now available is our 6 into 1 heavy duty header manufactured using USA made 304 S S and designed with a rotational firing sequence for increased power and torque. Guaranteed to outperform and outlast anything currently on the market, these headers were designed to