PPE Replacement Up Pipes For 01-04 6.6 Duramax 1988-1998 Chevrolet Tahoe The internal shape of the

The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the gears and bearings

Pre-welded hangers match OEM mounting points perfectly

Vibration resistance

the tuner intelligently fine-tunes its calibration on the fly without you having to change its power level

PPE Replacement Up Pipes For 01-04 6.6 Duramax 1988-1998 Chevrolet Tahoe The internal shape of theThe PPE 116120000 Replacement Up Pipes for your 2001 2004 GM 6. 6L Duramax increase flow, and reliability. Even a stock Duramax can produce high temperatures and pressures that cause OEM up pipes eventually fail from constant temperature and pressure fluctuation. PPE has taken the OEM replacement to a new level. PPE OEM Up Pipes allow 53% greater flow over stock, and are a direct bolt on to your factory manifolds. But unlike factory parts, PPE OEM Up