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Set of 6 +.040 over size Pistons & Matching Rings compatible with 1979-90 AMC Jeep CJ-5 CJ7 4.2 4.2L 258 cid +.040' Over Size or 3.790' Bore dia.

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$184.37

$ 89 .99 $89.99

In Stock
  • compatible with 1979-90 AMC Jeep models with the 4.2L 258 cid 6-cylinder
  • For blocks bored +.040 or 3.790" Bore Diameter


This listing is for a set of six (6) +040" Over size bore cast aluminum pistons and cast ring set compatible with 1979-90 AMC and Jeep models with the 4.2L 258 cid 6-cylinder engine. P/N (6) 470AP 40 +50668CP 40. Piston specifications are as follows: Head Type: Recessed head .178" deep; 8.2:1 CR w/2bbl carb. Ring Lands: 5/64"-5/64"-3/16" Comp. distance: 1.633" Pin dia. .931"


Jerry B.
2025-02-19 16:30:47
They are the best
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