Dave Folts (DFT) Billet IRS Side Cover Lite Weight | VW IRS Transaxle | 6061 Aluminum | Single | Made in USA
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Stop your IRS differential from walking under load. On a VW IRS transaxle the side covers locate the differential bearings, and the factory covers were never designed for the power and grip of a modern performance or off-road build. The Dave Folts Transmissions (DFT) Billet IRS Side Cover — Lite Weight is machined from 6061 aluminum and made to fit the case with the proper interference fit — what King Performance calls "the ultimate differential support" — in a lighter-weight design.
Priced per side cover — order a quantity of two for both sides.
Fitment
- Air-cooled VW IRS (independent rear suspension) transaxles — Beetle, Karmann Ghia, Type 3 and Thing with IRS.
- IRS-equipped dune buggies, Baja Bugs, sand cars and off-road builds.
Running a swing-axle transaxle? See the DFT Billet Swing Axle Side Cover. Not sure? Send us your year and a photo of the transaxle and we will confirm.
Features & benefits
- 6061 billet aluminum — far more rigid than the factory cover.
- Proper interference fit to the case keeps the differential located.
- Lite Weight design — extra strength without extra mass.
- Made in the USA by Dave Folts Transmissions.
Specifications
| Manufacturer | Dave Folts Transmissions (DFT) |
| Material | 6061 aluminum, billet |
| Application | VW IRS transaxle |
| Fit | Interference fit to the case |
| Design | Lite Weight |
| Sold as | Single side cover (order 2 for both sides) |
| Country of origin | USA |
| Use | Off-highway use only |
Installation notes
- Changing side covers affects differential position and bearing preload — set the differential up to specification when fitting.
- Use new seals and gaskets and clean all mating faces.
- Seat the cover squarely; the interference fit means it must go in straight.
- Installation by an experienced VW transaxle builder is recommended.
Frequently asked questions
Is the price for one or two?
One side cover. Order a quantity of two for both sides.
Who makes it?
Dave Folts Transmissions (DFT), in the USA.
Why upgrade the IRS side covers?
A rigid billet cover with a proper interference fit holds the differential in place under high power and off-road loads, where factory covers can flex.
Does it fit a swing-axle transaxle?
No — this is the IRS version. DFT makes a separate billet swing axle side cover.
How does your price compare with King Performance?
We match King's price: $200 per side cover.
Is it street legal?
King Performance lists it for off-highway use only.
Off-highway use only (per King Performance).
⚠ WARNING: This product can expose you to chemicals including lead, which is 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.
