Exhaust Bellows 4" x 5"L Interlocking Competition/Race Short-block options begin with original

Short-block options begin with original GM parts in Stage 1 and are able to hold more horsepower and torque as the stages increase

The PPE billet block off plate installs using the OEM fasteners

It eliminates potential low fuel rail pressure DTC codes P1093 or P0087 (low fuel rail pressure during power enrichment) that are caused by the compromised factory valve spring

Increased airflow is achieved with a large internal core for increased heat transfer and reduced restriction

Corrosion is often seen on this stock part as they age out

Exhaust Bellows 4" x 5"L Interlocking Competition/Race Short-block options begin with originalExhaust Bellows 4" x 5"L Interlocking