SIERRA MerCruiser Ford 302 / 351 Engine Coupler – 18-2173

Description

SIERRA MerCruiser Ford 302 / 351 Engine Coupler – 18-2173

Sierra 18-2173 is the hub-style engine coupler for selected MerCruiser Ford small-block V8 installations. It is cataloged for the 302-based 225 and 888 models and the 351-based 233 model and replaces Mercury/MerCruiser 59826A1 / 59826A3.

• Hub-style engine coupler for selected MerCruiser Ford V8 engines.
• Cataloged for MerCruiser 225 (302/5.0L), 888 (302/5.0L) and 233 (351/5.8L).
• Model-year ranges are generally early-to-mid 1970s; verify serial number and OEM coupler.
• Crosses to Mercury/MerCruiser 59826A1 and 59826A3.
• Check engine alignment and drive-yoke splines when replacing a damaged coupler.

For marine drive and engine service parts, fitment can vary by model, serial number, gear ratio, casting and prior service history. Compare the original OEM number and physical configuration before installation, and replace related seals, bearings, locking hardware or cable components when their condition requires it.

Specifications

• Manufacturer: Sierra
• Part Number: 18-2173
• Application: MerCruiser Ford 302/5.0L model 225 and 888, and Ford 351/5.8L model 233 applications within the cataloged 1971-1977 ranges.
• Part Type: Engine coupler
• Engine Family: Ford small-block V8
• Cataloged Engines: 302 / 5.0L and 351 / 5.8L
• MerCruiser Models: 225, 233, 888

Interchange / OEM References

• GLM: 11510
• Mallory: 9-72501
• MerCruiser Stern Drive: 59826A1, 59826A3