Introducing MaxSil™ Pistons for BMWs with Tefcote™ engineered for all BMW engine
applications. MaxSil™ Pistons are designed for optimized longevity, higher performance,
and improved fuel economy. MaxSil™ Pistons are lighter and stronger than original
pistons with 13 percent silicone content - allowing for tighter cylinder clearance
(0.0015") than original pistons. The tighter clearance, reduced heat expansion,
and reduced friction offer better performance and longevity than original pistons
while protecting horsepower output for the life of the engine.
In addition, MaxSil™ Piston skirts are coated with an anti-friction Teflon composite
coating, for additional friction and heat reduction. All MaxSil™ Pistons are pre-fitted
with Sealed Power chrome-moly piston rings. MaxSil™ Pistons are a quality BMW
piston replacement backed by a five year unlimited mileage warranty. Complete Engine
Rebuild Kits for BMWs also available.
Part Number
Begin
End
Model
Description
Bore Clearence & Wrist Pin Size
B1251261860N
1968
1976
>2002 2DR
(2002)
1.20mm over Pop Up piston for E12 head / MaxSil™ with Tefcote
Bore Clearence 0.0015" Wrist Pin 0.0005" over
1968
1976
2002TII 2DR
(2002)
B1251261946N
1968
1976
2002 2DR
(2002)
0.50MM Flat Top - MaxSil™ Piston
Bore Clearence 0.0015" Wrist Pin Standard
1977
1979
320I 2DR
(E21)
B1251266941N
1968
1976
2800CS 2DR
(COUP)
MaxSil™ Pistons / 2nd oversize / 86.47mm (+0.50)
Bore Clearence 0.0015" Wrist Pin Standard
1979
1981
528I 4DR
(E12)
1968
1971
BAV-2800 4DR
(BAV)
B1251270612N
1983
1984
533I 4DR
(E28)
MaxSil™ Pistons / 2nd oversize / 89.47mm (+0.50)
Bore Clearence 0.0015" Wrist Pin Standard
1978
1984
633CSI 2DR
(E24)
1978
1984
733I 4DR
(E23)
B1251286438N
1985
1988
535I 4DR
(E28)
MaxSil™ Pistons with Tefcote / 2nd oversize / 92.47mm (+0.50)
