Converts the E36 328i, 328is, Z3 and E39 528i from a dual mass flywheel to a solid flywheel and damped clutch disc, kit 52401210.
Kit 52401210 is Valeo's single-mass conversion for the M52 2.8L six-cylinder BMWs with a manual gearbox: the 1996 to 1999 E36 328i and 328is, the 1997 to 1998 Z3 2.8 and the 1997 to 1998 E39 528i. It is the part most owners land on when the original dual-mass flywheel starts rattling at idle and the clutch is worn at the same time, and they would rather replace both with one boxed kit than buy a new dual-mass unit again.
From the factory these cars use a dual-mass flywheel: two flywheel halves joined by arc springs and a bearing, which soak up crankshaft pulses before they reach the gearbox. Those springs and the bearing wear, and the flywheel cannot be resurfaced once it is loose. This kit replaces it with a one-piece solid flywheel and moves the torsional damping into the clutch disc, which has a long-travel damper in its hub. The result is a flywheel with nothing inside to wear out, and a disc that still smooths takeoff and part-throttle driving.
The kit includes the rigid flywheel and its bolts, the damper clutch disc, the cover assembly with pressure plate bolts, and a release bearing, so the core wear items of the job come in one box. No special tools are listed as required for the install. Expect a little more gear noise at idle in neutral than a healthy dual-mass setup; that is the normal compromise of a solid flywheel on a six-cylinder.
Valeo's own guidance is that dual-mass flywheels are judged by free play and rocking against vehicle-specific limits. With the gearbox out, turn the secondary mass by hand and check for excessive rotation or tilt; a unit beyond the limit is scrap. On the car, a high-gear roll-on from low rpm tells you whether the clutch disc is also slipping. Our slipping diagnosis guide describes that test, and what a clutch job costs helps you weigh the conversion against OE parts.
Listed fitment: BMW 328i 1996 to 1999, 328is 1996 to 1999, Z3 1997 to 1998 and 528i 1997 to 1998, all with the M52 2.8L and a manual gearbox. It does not cover the 1999-and-later Z3 or 528i, the E46 328i, or the earlier M50 cars, because clutch size and flywheel details changed across the range. If your car is a late-build 1999 or has had an engine swap, send us the year and VIN before ordering. For more clutch parts, see our rebuild kits category.
Building a modified M52? The ACT BM17-HDSS is a higher-capacity alternative, though it requires an ACT flywheel.
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The listed fitment is BMW 328i and 328is 1996 to 1999, Z3 1997 to 1998 and 528i 1997 to 1998, all with the M52 2.8L six and a manual gearbox.
A rigid flywheel with bolts, a damper clutch disc, the cover assembly with pressure plate bolts, and a release bearing.
Slightly. A solid flywheel lets a little more gear rattle through at idle in neutral. The long-travel damper in the disc hub handles most of the drivability.
Rattle at idle that stops with the pedal pressed, clunks on and off throttle, and a shake at shutdown are common signs. With the gearbox out, excessive free rotation or rocking between the two masses confirms it.
No. The disc and cover are matched to the supplied solid flywheel. Install the kit as a complete set.
