Speed Pro Piston Rings - 4.040 in Bore - Drop In - 1/16 x 1/16 x 3/16 in Thick - Standard Tension R0400042XL Additional additive package for diesel

Additional additive package for diesel passenger cars and trucks (API CJ-4)

Chevrolet: Laguna 75 - 75 7

1973-1976 Ford Thunderbird

or "roll couple"

Includes a one-half inch NPT machined port for installing a water temperature sending unit and two one-quarter inch NPT machined ports to plumb return lines on popular aftermarket cylinder heads

Speed Pro Piston Rings - 4.040 in Bore - Drop In - 1/16 x 1/16 x 3/16 in Thick - Standard Tension R0400042XL Additional additive package for dieselSpeed Pro designs and engineers pistons to meet the most demanding street performance and racing conditions. In combination, we draw upon more than 100 years of Speed Pro engine mastery to enhance the piston ring and its seal. Our Speed Pro brand is recognized for being a winner in every form of racing, and is the proven horsepower leader in oval track and drag racing. Hell Fire Rings: Speed Pro Hell Fire rings, manufactured from a specially hardened