The S515 Racing steering wheel hub adapter for Subaru is made to help you install an aftermarket racing steering wheel with a clean, centered fit. It’s a practical solution when you want a more direct steering feel and a solid mounting interface between the steering shaft and a common 6-bolt wheel pattern.
S515 Racing steering wheel hub adapter for Subaru – key features
- Standard 6-bolt mounting pattern using M5 hardware.
- Multi-pattern stud layout (manufacturer notes compatibility with popular aftermarket wheel brands such as MOMO, Nardi, OMP, Isotta).
- Durable plastic construction intended for sporty driving use.
- Important: manufacturer states it is not compatible with airbag-equipped vehicles.
What it does in real use
The S515 Racing steering wheel hub adapter for Subaru provides the correct interface so your aftermarket wheel can sit properly aligned and feel stable under load. It’s especially useful for track-focused builds or spirited road cars where you want consistent steering feedback and a tidy installation.
Technical specs
- Spline count: 36-spline
- Steering shaft diameter: 14 mm
- Overall size: 95 mm (diameter) x 66.5 mm (height)
- Wheel mounting: 6-bolt pattern, M5 bolts
- Material: durable plastic (per manufacturer description)
Selection and installation tips
- Before buying, confirm your car matches the required interface: 36-spline and 14 mm steering shaft diameter.
- The manufacturer notes tapered-tooth style designs can be sensitive to alignment. Make sure the hub sits fully flush and perfectly indexed—misalignment can lead to slip and excess stress during tightening.
- Degrease the steering shaft before installation so the hub can clamp correctly.
- When using a torque wrench, keep it straight and centered, and prevent the wheel/shaft from turning while tightening to get consistent readings.
- If horn wiring is involved, verify function before final assembly and follow the vehicle’s original wiring logic.
Compatibility And Part Number
- Compatible part number: HUB-S515
- Fitment: manufacturer states “most Subaru vehicles”; exclusions mentioned: Subaru Brumby (1990) and Subaru Impreza WRX (2001)
- Note: not for airbag-equipped vehicles
If you’re planning an aftermarket wheel setup, the S515 Racing steering wheel hub adapter for Subaru is a solid starting point—double-check your steering shaft details before installation for a trouble-free fit.
