Spec 2002-2004 1.8T 6 Speed VW Aluminum Flywheel
The SPEC SV81A is a 10 lb aluminum single-mass flywheel for the Volkswagen 1.8T with the six-speed manual: the Mk4 Golf/GTI, the Jetta GLI and the late New Beetle from the 2002 to 2004 model years on our listing. Most buyers find it when the factory dual-mass flywheel starts to rattle, knock on shutdown or let the clutch shudder, and they would rather convert to a lighter single-mass setup than pay for another dual-mass unit. It is also a common part on tuned 1.8T cars, where the stock flywheel and clutch are the first things to give up.
From the factory these cars use a dual-mass flywheel, a two-piece part with internal springs that soaks up engine pulses. The SV81A replaces it with one solid aluminum wheel that carries the starter ring gear and the friction face for the clutch disc. With far less rotating mass, the engine revs up and drops between gears faster, and there are no internal springs left to wear out. SPEC says it develops each billet flywheel around how the specific car reacts to a change in rotating mass. The trade-off of any single-mass conversion is a little more gear rattle at idle and less damping at very low rpm; our dual-mass vs single-mass guide explains the difference in plain terms.
Rattle and judder can come from motor mounts, the clutch or the flywheel, so rule those out first. The dual-mass flywheel failure guide covers the free-play and noise checks, and the slipping diagnosis guide covers a road test for a worn clutch. With the gearbox off, look for cracks, heat marks and excessive play in the old dual-mass unit.
Our listing covers the 2002 to 2004 1.8T six-speed Volkswagen. SPEC's own SV81A page lists the Golf IV 1.8T six-speed from 2002 to 2005, the Jetta IV 1.8T six-speed (GLI) from 2003 to 2005, and the late Beetle six-speed from 2002 to 2005, plus Audi A3 and S3 and Seat applications sold outside the US. It does not fit five-speed 1.8T cars, the VR6, or automatics. Because the six-speed and five-speed cars look alike, confirm the gearbox before ordering, or send us the year and VIN. Related VW clutch parts are in the hard parts collection.
The SV81A is new, in stock, ships the same business day from the USA and is backed by a 1-year warranty.
| Brand | SPEC |
| Part number | SV81A |
| Fits | Spec 2002-2004 1.8T 6 Speed VW Aluminum Flywheel |
| Type | Flywheels |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Yes. It is a one-piece aluminum single-mass flywheel that replaces the factory dual-mass unit. Pair it with a clutch built for a single-mass flywheel.
No. SPEC lists the SV81A for the six-speed 1.8T cars. Five-speed 1.8T cars use a different flywheel, so check the gearbox before ordering.
SPEC lists it at 10 lb, which is much lighter than a stock dual-mass flywheel.
A clutch built for the dual-mass flywheel is not the right match. Use a single-mass clutch such as the SPEC Stage 2 sprung-disc kit for these cars.
Usually a little. A single-mass flywheel does not damp engine pulses like a dual-mass unit, so some gear rattle at idle is normal after the conversion.
