Motor Fitting – Fits MerCruiser 4.5L MPI 250 Alpha Bravo (Replaces 8M0095953, 8M0133716)

Product Details

This Motor Fitting is designed for MerCruiser 4.5L MPI 250 Alpha Bravo stern drive engines. It provides a reliable replacement solution for most Mercury MerCruiser stern drive applications requiring this essential motor component.

This aftermarket motor fitting directly replaces OEM numbers 8M0095953 and 8M0133716.

• Direct-fit replacement for MerCruiser stern drive systems
• Compatible with 4.5L MPI 250 Alpha Bravo configurations
• Precision-engineered to match OEM specifications

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Part Type

Motor Fitting

Application

Marine Stern Drive Engine

Engine Compatibility

MerCruiser 4.5L MPI 250 Alpha Bravo

OEM Cross-Reference

8M0095953, 8M0133716

What's in the Box

• 1 × Motor Fitting

Installation Notes

1. Disconnect the battery and ensure the engine is cool before beginning work.
2. Identify the existing motor fitting location on your MerCruiser stern drive assembly.
3. Remove the old fitting carefully, noting the orientation and any sealing surfaces.
4. Clean all mating surfaces thoroughly to remove old gasket material, debris, or corrosion.
5. Install the new motor fitting, ensuring proper alignment with mounting points.
6. Tighten fasteners to manufacturer-specified torque in a cross-pattern sequence.
7. Reconnect all hoses and electrical connections as applicable.
8. Perform a visual inspection and test the system before returning to service.

Troubleshooting & FAQ

How do I confirm this fits my exact engine?

Cross-reference your engine's serial number with the compatibility table above. Verify that your engine is a MerCruiser 4.5L MPI 250 Alpha Bravo stern drive. If uncertain, compare the OEM part numbers 8M0095953 or 8M0133716 against your service manual or existing part.

What are signs this motor fitting needs replacement?

Common indicators include visible cracks or damage to the fitting, leaks around the connection points, unusual vibration during operation, or corrosion that compromises the seal. Regular inspection during routine maintenance can catch wear before failure occurs.

Can I install this myself or do I need a mechanic?

Installation requires basic mechanical skills and appropriate tools. If you are comfortable working on stern drive systems and have access to torque specifications, you can perform this replacement. However, professional installation ensures proper fitment and system integrity.

Is any gasket or sealant required during installation?

Check your engine's service manual for specific requirements. Some installations may require a gasket or marine-grade sealant to ensure a proper seal. Always follow manufacturer guidelines for your specific stern drive model.

Will this work on older MerCruiser models?

This fitting is designed specifically for MerCruiser 4.5L MPI 250 Alpha Bravo stern drives. Compatibility with other models depends on whether they use the same OEM part numbers (8M0095953 or 8M0133716). Verify against your engine's parts list before ordering.

What is the expected service life of this part?

Service life depends on operating conditions, maintenance practices, and environmental factors. Regular inspection during seasonal maintenance and prompt replacement at first signs of wear will help maintain optimal performance.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.