Mercedes-Benz SL Power Steering Pump Replacement Parts

Earlier SL generations — the R107 (1971–1989), R129 (1989–2001), and R230 (2001–2012) — all used hydraulic power steering and therefore have a physical pump. The R231 (2012–2020) switched to electric power steering (EPS), meaning it has no hydraulic pump at all. If you own an R231, there is no power steering pump to replace; the system is fully electric and you should speak to a specialist about the EPS rack or control unit instead.

Both years fall within the R230 generation (2001–2012), so you are working within the same basic platform, which is a good start. However, the R230 carried several engine variants — including the SL350, SL500/SL55 AMG, and SL600 — and pump fitment can vary between engine sizes, so you need to match the engine as well as the generation. Confirm the exact part number with the breaker against your registration before buying.

Trim level alone does not affect fitment here, but on the R230 the trim name broadly reflects the engine size, and engine size does influence which pump is fitted — so an SL350 and an SL500 may well carry different pumps. Treat the engine designation as the key matching criterion rather than the trim name itself. Always confirm the part against your registration with the breaker.

The R129 (1989–2001) and R230 (2001–2012) are entirely different generations with different engines, subframes, and ancillary layouts, so a direct swap across that generational boundary is very unlikely to be straightforward. Even if the mounting appeared similar, the hydraulic specifications and hose connections could differ. Ask the breaker to cross-reference both part numbers against your registration before proceeding.

A 2015 SL falls within the R231 generation (2012–2020), which uses fully electric power steering with no hydraulic pump anywhere in the system. There is genuinely no power steering pump to source for this car, so listings you find are unlikely to be compatible or relevant. If you have a steering fault, the issue will lie with the electric motor, rack, or associated electronics — a Mercedes specialist or auto-electrician would be the right next step.

Mileage is worth considering but is not an automatic disqualifier; a hydraulic pump from a well-maintained donor car can give good further service. What matters most for fitment is that the donor vehicle shares the same generation (R230) and the same engine variant as yours. Confirm this with the breaker against your registration, and ask whether they can provide any warranty or return period on the unit.