Enginetech M43658-020 is a premium .020" oversize piston ring set for 1968-1993 Ford, Lincoln, Mercury 7.0L/7.5L 429-460ci V8 engines, sold as a complete set covering all cylinders.
Important Notes:
- Sized for cylinders bored .020 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.
- Thru 11/17/92. Premium. Ductile top. 5/64 5/64 3/16. Deep oil ring.
| Part Number | M43658-020 |
| Grade | Premium |
| Bore Size | .020" Oversize |
| Ring Stack (Top/2nd/Oil) | 5/64 / 5/64 / 3/16 |
| Standard Bore Diameter | 4.360 in |
| Quantity | Complete set - covers all 8 cylinders |
| Engine | 7.0L/7.5L 429-460ci V8 |
| Year Range | 1968-1993 |
| Makes | Ford, Lincoln, Mercury |
| Country of Origin | US |
| OEM Cross-Refs | Hastings:2M598, FEL-PRO:E-296K, Perfect Circle:40843 |
Sold as a complete piston ring set - one set covers all cylinders and is required per engine.
Fitment:
- 1968-1968 Lincoln Continental 7.0L 429ci V8
- 1968-1971 Lincoln Mark III 7.5L 460ci V8
- 1968-1973 Ford Thunderbird 7.0L 429ci V8
- 1968-1978 Lincoln Continental 7.5L 460ci V8
- 1969-1969 Ford LTD 7.0L 429ci V8
- 1971-1973 Ford LTD 7.0L 429ci V8
- 1969-1970 Mercury Marauder 7.0L 429ci V8
- 1969-1971 Ford Mustang 7.0L 429ci V8
- 1969-1971 Mercury Colony Park 7.0L 429ci V8
- 1969-1971 Mercury Cougar 7.0L 429ci V8
- 1969-1971 Mercury Cyclone 7.0L 429ci V8
- 1969-1971 Mercury Marquis 7.0L 429ci V8
- 1969-1971 Mercury Monterey 7.0L 429ci V8
- 1969-1972 Ford Custom 7.0L 429ci V8
- 1969-1973 Ford Country Sedan 7.0L 429ci V8
- 1969-1973 Ford Country Squire 7.0L 429ci V8
- 1969-1973 Ford Custom 500 7.0L 429ci V8
- 1969-1973 Ford Galaxie 500 7.0L 429ci V8
- 1969-1973 Ford Ranch Wagon 7.0L 429ci V8
- 1969-1973 Mercury Colony Park 7.0L 429ci V8
- 1969-1973 Mercury Marquis 7.0L 429ci V8
- 1969-1973 Mercury Monterey 7.0L 429ci V8
- 1970-1970 Ford Fairlane 7.0L 429ci V8
- 1970-1970 Ford Falcon 7.0L 429ci V8
- 1970-1973 Ford Ranchero 7.0L 429ci V8
- 1970-1973 Ford Torino 7.0L 429ci V8
- 1970-1973 Mercury Montego 7.0L 429ci V8
- 1971-1972 Mercury Colony Park 7.0L 429ci V8
- 1971-1972 Mercury Marquis 7.0L 429ci V8
- 1971-1972 Mercury Monterey 7.0L 429ci V8
- ...and 29 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.
