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Pistons and Rings for your Flathead 45 Cubic Inch Solo & Servi-Cars

***NOTE: Be sure to measure your bore and calculate the correct size pistons to use!

STANDARD 45" BORE IS 2.745"
measurements should be taken 1/2" from the top of the cylinder-front to rear. Clearance in cylinder should be .001" to .992" in normal weather climates, more in southern states.

If by chance you miscalculate, we will exchange pistons. Please include $4.00 for shipping and handling along with invoice. Cylinder Sleeves located on Top End Parts Page.

Standard "45" Bore is 2.745"

Piston Assemblies with Rings, Pins & Keepers. (1929-73 45" Solo & Servi-Car)

22251-29 2.745" STD $89.95
22253-29 2.755" .010" $89.95
22254-29 2.765" .020" $89.95
22255-29 2.775" .030" $89.95
22256-29 2.785" .040" $89.95
22257-29 2.795" .050" $89.95
22258-29 2.805" .060" $89.95
22259-29 2.815" .070" $89.95
22260-29 2.825" .080" $89.95
22261-29 2.835" .090" $89.95
22262-29 2.845" .100" $89.95

Replacement Oil Ring Sets For 45" Motors - (Set For 2 Pistons)

  Old Style 1/8" 1929-55

New Style 3/16" 1950-73

22355-38 STD $28.95 22355-52 STD $34.95
22357-38 .010 $28.95 22357-52 .010 $34.95
22358-38 .020 $28.95 22358-52 .020 $34.95
22359-38 .030 $28.95 22359-52 .030 $34.95
22360-38 .040 $28.95 22360-52 .040 $34.95
22361-38 .050 $28.95 22361-52 .050 $34.95
22363-38 .060 $28.95 22362-52 .060 $34.95
22363-38 .070 $28.95 22363-52 .070 $34.95
      22364-52 .080 $34.95
      22365-52 .090 $34.95
Piston Pins

22700-32 Piston Pin - STD. $10.95
22702-32 Piston Pin - .002" oversize $10.95
22704-32 Piston Pin - .004" oversize $10.95
22581-32 Early Piston Pin Locks (ea.) 2 needed $3.95
22582-52 Late Piston Pin Locks (ea.) 2 needed $1.75
Gasket Sets

Our gaskets are the best money can buy. Don't be fooled by cheap surplus gasket seals that have shrunk-up and are no longer able to do the job they were intended to do. Our kit comes with all o-rings, oil seals, asbestos head gaskets to rebuild your 45" right. Kit fits 1940-68 but most gaskets will fit earlier or later models. (will put in the extra o-rings and gaskets for 1969-73 models and/or copper head gaskets for iron heads at your request.)

17026-40 Complete Motor Gasket Set with asbestos head gaskets $29.95
17025-36 Complete Motor Gasket Set with copper head gaskets $32.95
17031-40 Top End Gasket Set with asbestos head gaskets $19.95
17030-36 Top End Gasket Set with copper head gasket $22.95
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