Enginetech R40558-060 is a cast .060" oversize piston ring set for 1961-1976 Ford, Mercury 5.9L-6.7L 360-410ci V8 engines, sold as a complete set covering all cylinders.
Important Notes:
- Sized for cylinders bored .060 inch oversize. Verify your finished bore diameter with a precision gauge before ordering - rings sized for the wrong bore will not seal correctly.
- File-fit and gap each ring to the manufacturer's end-gap specification for your application before installation. Improper end gap causes blow-by or ring-end butting under heat.
- Replace piston rings as a complete set during any rebuild. One set covers all cylinders for the engine.
- Cast. 5/64 3/32 3/16. Check piston grooves before using.
- Cast. 5/64 3/32 3/16. Does not fit OE pistons. Check piston grooves before using.
| Part Number | R40558-060 |
| Grade | Cast |
| Bore Size | .060" Oversize |
| Ring Stack (Top/2nd/Oil) | 5/64 / 3/32 / 3/16 |
| Standard Bore Diameter | 4.050 in |
| Quantity | Complete set - covers all 8 cylinders |
| Engine | 5.9L-6.7L 360-410ci V8 |
| Year Range | 1961-1976 |
| Makes | Ford, Mercury |
| Country of Origin | US |
| OEM Cross-Refs | Hastings:574, FEL-PRO:E-180X, Perfect Circle:50134 |
Sold as a complete piston ring set - one set covers all cylinders and is required per engine.
Fitment:
- 1961-1962 Ford Galaxie 6.4L 390ci V8
- 1961-1962 Ford Thunderbird 6.4L 390ci V8
- 1961-1962 Mercury Meteor 6.4L 390ci V8
- 1961-1962 Mercury Monterey 6.4L 390ci V8
- 1961-1963 Ford Country Sedan 6.4L 390ci V8
- 1961-1963 Ford Country Squire 6.4L 390ci V8
- 1961-1963 Ford Ranch Wagon 6.4L 390ci V8
- 1961-1963 Mercury Meteor 6.4L 390ci V8
- 1961-1965 Ford Fairlane 6.4L 390ci V8
- 1961-1967 Ford Galaxie 6.4L 390ci V8
- 1961-1967 Ford Thunderbird 6.4L 390ci V8
- 1961-1968 Ford Thunderbird 6.4L 390ci V8
- 1961-1968 Mercury Monterey 6.4L 390ci V8
- 1962-1963 Ford Galaxie 500 6.4L 390ci V8
- 1963-1963 Ford 300 6.4L 390ci V8
- 1963-1963 Mercury Country Cruiser 6.4L 390ci V8
- 1963-1963 Mercury Meteor 6.4L 390ci V8
- 1963-1965 Ford Galaxie 6.4L 390ci V8
- 1963-1965 Ford Thunderbird 6.4L 390ci V8
- 1963-1965 Mercury Monterey 6.4L 390ci V8
- 1963-1967 Ford Galaxie 6.4L 390ci V8
- 1963-1967 Ford Thunderbird 6.4L 390ci V8
- 1963-1967 Mercury Monterey 6.4L 390ci V8
- 1964-1964 Ford Galaxie 500 6.4L 390ci V8
- 1968-1971 Ford Galaxie 500 6.4L 390ci V8
- 1964-1965 Mercury Colony Park 6.4L 390ci V8
- 1964-1965 Mercury Commuter 6.4L 390ci V8
- 1964-1965 Mercury Montclair 6.4L 390ci V8
- 1964-1965 Mercury Park Lane 6.4L 390ci V8
- 1964-1967 Ford Galaxie 6.4L 390ci V8
- ...and 75 additional applications
Enginetech piston ring sets are manufactured to OEM specifications and offered in both premium and cast grades to match the demands of stock rebuilds and moderate-performance builds. Each set is application-specific, with ring widths and end-gap characteristics matched to the bore and groove geometry of the engine family it serves. Ring sets are sold by bore size - standard for unmachined bores, with oversizes for blocks that have been bored and honed - so verify your finished bore diameter with a precision gauge before ordering, since rings sized for the wrong bore will not seal correctly. Always file-fit and gap each ring to the manufacturer's specification for your application, and replace rings as a complete set during any rebuild. Enginetech documents every set with the ring stack dimensions, bore size, and cross-references so the correct set reaches the bench the first time.
WARNING: This product can expose you to chemicals including lead and nickel, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.
