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![R40558-030 Piston Ring Set for 1961-1976 Ford, Mercury 5.9L, 6.4L, 6.7L [+0.030 in. Oversize]](https://www.jegs.com/images/mini_750/400/416/416-r40558-030.jpg)
Vehicle Info NeededENGINETECHPART NUMBER: 416-R40558-030
R40558-030 Piston Ring Set for 1961-1976 Ford, Mercury 5.9L, 6.4L, 6.7L [+0.030 in. Oversize]
$4299
Ships on Sep 14, 2026
Lowest Price GuaranteeFord
Piston Ring Set1961-1976 Ford, Mercury 5.9L, 6.4L, 6.7L Standard Ring Set Size: +0.030 in. Oversize Sold as a Set
The Enginetech R40558-030 is a piston ring set for 1961-1976 Ford, Mercury 5.9L, 6.4L, 6.7L. 5/64 3/32 3/16. Check piston grooves before using engines at +0.030 in. Oversize oversize. Ring set is engineered for proper cylinder sealing and oil control.
Enginetech R40558-030 Piston Ring Set Features:
- Fitment: Ford, 360 ci, 390 ci, 410 ci
- Size: +0.030 in. Oversize
- Engineered to OE specifications for direct replacement
- Note: Cast. 5/64 3/32 3/16./64 3/32 3/16. Check piston grooves before using./64 3/32 3/16. Does not fit OE pistons. Check piston grooves before using.
Part TypePiston Ring Set
BrandENGINETECH
Package Height3.5
Package Width4.0
Package Length4.0
Weight1.5 PG
Part CategoryReplacement Parts
GaplessNo
Second Compression Ring Thickness3/32
Size+0.030 in. Oversize
Top Compression Ring Thickness5/64
File FitNo
Top Ring MaterialStandard
QuantitySold as a set
Oil Ring Thickness3/16
FitmentFord
Part FitmentDirect Fit
Ring Outside Diameter4.050
Vendor Part NumberR40558-030
Package Qty1
Package TypeEA
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