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Official Wosp Lms117 Starter Motor 12v 1.2kw Fits Riley 12/4 High Torque Starter Motor Markdown: -50% [tewKovq2]

$47.99 $153.99 -69%

Denso OSGR *rApplicationsRiley 12/4Voltage12VPolarityBothPower1.2kWStarter motor type terminology explained: OSGR – Off Set Gear Reduction (larger motor is offset, solenoid acts directly on drive). PMGR – Permanent Magnet Gear Reduction (planetary ge

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Official Wosp Lms117 Starter Motor 12v 1.2kw Fits Riley 12/4 High Torque Starter Motor Markdown: -50% [tewKovq2]

Denso OSGR *r

Applications

  • Riley 12/4
Voltage 12V
Polarity Both
Power 1.2kW

Starter motor type terminology explained:

  • OSGR – Off Set Gear Reduction (larger motor is offset, solenoid acts directly on drive).
  • PMGR – Permanent Magnet Gear Reduction (planetary gearbox usually on drive axis).
  • WFGR – Wound Field Gear Reduction.

It is strongly advised that PMGR units are not used in conjunction with a bulkhead mounted solenoid, by linking the B+ and ignition trigger terminal of our starter motor. This can cause the pinion to hang in mesh after the engine fires. It will cause unnecessary noise and wear to the ring gear, and will shorten the life of the starter motor's clutch.

We would advise that the slimline Hitachi or Axial types should only be favoured over a Denso type due to space constraints / form factor.

WOSP is 100% OE based. However for many of our more price sensitive lines such as our classic range, we use a remanufactured OE Denso starter motor. This still offers far better quality than a new aftermarket or imitation piece. You will see the type noted with a suffix *r to denote this.

What Our Customers Say

January 18, 2026

Absolutely no complaints!

I'm very, very, very, very, very happy with my buy.

- Gwydion H..

January 18, 2026

Absolutely no complaints!

This is a nice, and a very, very, very, very, very solid item.

- Manawydan L..

January 18, 2026

Absolutely no complaints!

An outstanding item that I use each and every single day.

- Mabon E..

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