MAHLE Engine Piston Ring Set P/N:40564CP.030
MAHLE 40141CP.030 piston ring set for the 1970-1976 Chevrolet Impala V8 6.6L and other vehicles seals the combustion chamber against the cylinder wall. It also controls oil on the bore, and its design is driven by OE requirements.
Rising oil consumption, blue exhaust smoke or lost compression can mean worn piston rings. Worn valve stem seals can also burn oil, so these signs alone do not prove the rings are at fault.
This piston ring set is a direct-fit replacement for the 1970-1976 Chevrolet Impala V8 6.6L, the 1966 Dodge Charger V8 5.9L and the 1961-1964 Chrysler Town & Country V8 5.9L, among many other vehicles. If your vehicle is not named here, find your year and engine in the "Vehicles it fits" section.
Fit and size
Build and materials
One piston ring set. The quantity per application is 1.
Interchange: 2M661030 · E243K30
This part cross-references / interchanges with the following part numbers:
Is the MAHLE 40141CP.030 piston ring set right for a 1970-1976 Chevrolet Impala V8 6.6L?
Yes. MAHLE 40141CP.030 fits the 1970-1976 Chevrolet Impala V8 6.6L and the 1966 Dodge Charger V8 5.9L. For another vehicle, look up your year and engine in the "Vehicles it fits" section.
What coating is on the face of the MAHLE 40141CP.030 piston rings?
The piston ring face on MAHLE 40141CP.030 has a Plasma-Moly coating. The oil ring assembly is stainless steel.
What bore diameter is this piston ring set listed for?
This MAHLE ring set is listed for a bore diameter of 4.155 in.
Can worn piston rings cause blue smoke from the exhaust?
Yes, worn rings can be one source of blue exhaust smoke, along with rising oil use or lost compression. A shop can run a compression or leak-down test to check them.
Does this MAHLE engine piston ring set replace part number 2M661030?
Yes. 2M661030 is an interchange number for MAHLE 40141CP.030, as is E243K30.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.