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Description
Enginetech Moly Piston Rings for 1962 - 1995 Chevy Chevrolet SBC 327 350 5.7Note: This item ships in standard size by default. If oversize is needed, please message us when ordering. Details Moly piston rings 5 64 5 64 3 16 ring groove Sizes Available: STD, . 020", . 030", . 040", . 060" Fitment 1962 1967 CHEVY 327 CAR AND LIGHT TRUCK ENGINES 1968 1986 CHEVY 350 5. 7 SBC LIGHT TRUCK GENI ENGINES 1968 1985 CHEVY 350 5. 7 SBC PASSENGER CAR GENI ENGINES 1987 1995 CHEVY 350 5. 7 SBC LIGHT TRUCK GENI ENGINES (WILL NOT FIT STD OE
Note: This item ships in standard size by default. If oversize is needed, please message us when ordering.
Details
Moly piston rings
5/64 5/64 3/16 ring groove
Sizes Available:STD, .020", .030", .040", .060"
Moly piston rings
5/64 5/64 3/16 ring groove
Sizes Available:STD, .020", .030", .040", .060"
Fitment
1962-1967 CHEVY 327 CAR AND LIGHT TRUCK ENGINES
1968-1986 CHEVY 350 5.7 SBC LIGHT TRUCK GENI ENGINES
1968-1985 CHEVY 350 5.7 SBC PASSENGER CAR GENI ENGINES
1987-1995 CHEVY 350 5.7 SBC LIGHT TRUCK GENI ENGINES
(WILL NOT FIT STD OE SHALLOW GROOVE OIL RING PISTONS)
1986-1993 CHEVY 350 5.7 SBC LIGHT TRUCK GENI ENGINES
(WILL NOT FIT LT1 OR STD OE SHALLOW GROOVE OIL RING PISTONS)
1968-1969 CHEVY 302 SBC 1962-1969 CHEVY 327 SBC
Performance Part: No
Interchange Part Number: R40058, 2M139, 40564, E-251K, 5.7L
Type: Piston Ring
Fitment Type: Direct Replacement
Universal Fitment: Yes
Cylinder Bore Diameter: 4 in
Manufacturer Warranty: Unspecified Length
Items Included: Piston Rings
Manufacturer Part Number: M40058
Brand: Enginetech
MPN: M40058
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Exchange/Return Notes
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4.8 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Amazing stuff
Style: 14oz
I’ve been using this stuff for a number of years for a number of vehicles now and it works every time. It’s especially great with those small annoying leaks where you just lose a couple pounds every few days so you have to keep adding air like once a week. It totally seals it. The bottle says to only rely on it for 300 to 500 miles and then get a proper fix. However, I have not found this to be the case. The seal holds for the rest of the life of my tire every time I’ve used it.
My only complaint is that I wish it was a little cheaper, but you can seal up 2 tires (use only half the can per tire - you can probably even get away with using less). There is a garage not far from me that fixes leaking tires for $10, which is the same price as this product so not really saving any money by using it. It’s more just a matter of convenience.
Just make sure you get this “thru-core” one. They have other ones as well so it can get confusing, but the one you’d want for situations like I’ve described above (small to medium leak in a typical passenger vehicle) is this “thru-core” one.
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Reviewed in the United States on March 31, 2023
★★★★★ 3
It worked
Style: 14oz
The product works.
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Reviewed in the United States on October 24, 2023
★★★★★ 5
Saved the day, even at 25°
Style: 18oz
The tire tread was peeling off the tire causing a leak that could not be plugged. Completely flat. It was about 25° outside and the can only dispensed half the contents. Was able to inflate the tire and make it to the shop. So the slime saved the day.
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Reviewed in the United States on April 19, 2025
★★★★★ 5
Good bike tire parches
Size: 24 x 35mm
Patches work nicely.
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Reviewed in the United States on January 29, 2026
★★★★★ 5
Arrived on Time
Size: 24 x 35mm
My package arrived on time. They are thick, and seem to be made of quality materials. I have not needed to use them yet, but will I update my review when I do.
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Reviewed in the United States on April 7, 2026