Moderate — 2–4 hours
Description
This sprocket meets or exceeds original equipment specifications and is compatible with standard timing chain and gear kits. The S1237 is a direct stock replacement for worn or damaged crankshaft sprockets. It has 25 teeth and a single keyway, and is not adjustable.
Fitment
Fitment Guaranteed
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on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Melling |
| Part Number | M00L S1237 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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