Sierra 18-1350 Lower Main Bearing, Replaces 433503, for V4 & V6 60 Degree Engines

The Sierra 18-1350 is a lower main bearing built for V4 & V6 60 degree outboard engines. It is a roller-type bearing designed to support the crankshaft's lower main journal, and it uses grease as its compatible lubricant. As a direct replacement for OEM part 433503, it is manufactured to meet or exceed the specifications of the original equipment component it replaces, so it installs and performs the same as the part it is taking out.

This bearing is a compact, precision-machined component measuring roughly 0.39 x 0.39 x 0.39 inches, keeping it in line with the OEM footprint it is designed to fit into. It is intended for technicians and boat owners performing lower unit or powerhead rebuild work on V4 and V6 60 degree engine families, and it is sold as a single unit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-1350
• Product Type: Lower Main Bearing
• Bearing Type: Roller Bearing
• Compatible Lubricant: Grease
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.13 pounds
• Country of Origin: China
• UPC: 808282236090
• OEM Cross Reference: 433503

Fitment

• V4 & V6 60 degree engines

Replaces (OEM)

• 433503

Frequently Asked Questions

What engines does the Sierra 18-1350 fit? It is designed for V4 & V6 60 degree engines, matching the fitment specified for this lower main bearing.

What OEM part number does the 18-1350 replace? The 18-1350 is a direct replacement for OEM part number 433503.

What type of bearing is the Sierra 18-1350? It is a roller-type bearing, specifically a lower main bearing used to support the crankshaft's lower main journal.

How big is the Sierra 18-1350 bearing? The bearing measures approximately 0.39 x 0.39 x 0.39 inches.

How much does the 18-1350 weigh? This lower main bearing weighs 0.13 pounds.

What lubricant should be used with this bearing? Grease is the compatible lubricant for the Sierra 18-1350 lower main bearing.

Is the Sierra 18-1350 genuine OEM or aftermarket? It is an aftermarket Sierra part manufactured to meet or exceed the specifications of OEM part 433503, which it replaces.

Where is the Sierra 18-1350 manufactured? The country of origin for this bearing is China.

Does the 18-1350 come as a single bearing or a kit? The Sierra 18-1350 is sold as a single lower main bearing unit.

What is the UPC for the Sierra 18-1350? The UPC associated with the Sierra 18-1350 lower main bearing is 808282236090.