MAHLE Original Piston Rings - 4.040" Bore - File Fit - 1/16 x 1/16 x 3/16" Thick - Standard Tension 39000509 Mounting hardware and a 3/4"

Mounting hardware and a 3/4" Panhard bar bolt are included

torque and lowering EGT's

2008-2012 Chevrolet Express 3500

1989-1991 Oldsmobile Cutlass Calais

Bully Dog products have you covered with increased performance

MAHLE Original Piston Rings - 4.040" Bore - File Fit - 1/16 x 1/16 x 3/16" Thick - Standard Tension 39000509 Mounting hardware and a 3/4"Product Description: Piston Rings MAHLE Original 4. 040 in Bore File Fit 1 16 x 1 16 x 3 16 in Thick Standard Tension Steel Plasma Moly 8 Cylinder MAHLE Performance boasts the most extensive line of performance engine bearings in the market hands down. Combining the legendary CLEVITE bearing brand for domestic applications with the global coverage in the MAHLE brand for the import market, MAHLE Performance truly is the engine bearing of choice in the