Sierra 18-2162 Shift Slide and Screw, White - Replaces Mercruiser 33981, 8507522

The Sierra 18-2162 Shift Slide and Screw is a precision-built replacement component for MerCruiser stern drive shift mechanisms. Finished in white with a machined exterior, this small but critical part is engineered to meet or exceed original equipment quality, ensuring smooth and reliable shift engagement. It is designed as a direct interchange for a wide range of Mallory and Mercruiser OEM part numbers, making it easy to source a correct replacement when the original slide and screw show wear or damage. The compact dimensions and machined construction allow it to fit into the shift mechanism assembly exactly as the original part did, restoring proper shift feel and function without requiring modification to surrounding components. As with all Sierra parts, this shift slide and screw is manufactured to consistent quality standards so boat owners and marine technicians can install it with confidence that fit and performance will match or exceed the factory original.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2162
• Color: White
• Finish: Machined
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.14 pounds
• Fit Type: Universal Fit
• UPC: 808282257729
• OEM Cross Reference: Mallory 9-72151; Mercruiser 8507522, 8507521, 33981T1, 33981T, 33981

Fitment

Fit specific; verify against the OEM part numbers listed below to ensure correct fit for your MerCruiser shift mechanism.

Replaces (OEM)

• Mallory 9-72151
• Mercruiser 8507522
• Mercruiser 8507521
• Mercruiser 33981T1
• Mercruiser 33981T
• Mercruiser 33981

Frequently Asked Questions

What is the Sierra 18-2162 Shift Slide and Screw used for? The Sierra 18-2162 is a shift slide and screw component used within a MerCruiser stern drive shift mechanism to help transfer shift lever movement into gear engagement.

Does the 18-2162 replace Mercruiser part number 33981? Yes, the Sierra 18-2162 Shift Slide and Screw is designed to interchange with Mercruiser 33981, along with 33981T, 33981T1, 8507522, and 8507521.

Is the Sierra 18-2162 compatible with Mallory shift components? It is designed as a direct interchange for Mallory part number 9-72151, in addition to several Mercruiser OEM numbers.

What color is the 18-2162 shift slide and screw? It is finished in white with a machined exterior surface.

How much does the Sierra 18-2162 weigh? The Sierra 18-2162 Shift Slide and Screw weighs 0.14 pounds.

What are the dimensions of this part? The Sierra 18-2162 measures 0.39 x 0.39 x 0.39 inches.

Is this a genuine Sierra part or an aftermarket copy? The 18-2162 is a genuine Sierra-manufactured part, built to meet or exceed the quality of the original equipment part it replaces.

Will the 18-2162 fit any MerCruiser shift mechanism? Fit is part-number specific, so buyers should confirm their existing Mallory or Mercruiser part number matches one of the OEM cross-references for the 18-2162 before ordering.

What is included when I order the 18-2162? The 18-2162 ships as the single shift slide and screw component, ready to install into the shift mechanism assembly.

Is the Sierra 18-2162 still in production? Yes, the 18-2162 Shift Slide and Screw is not discontinued and remains available as a current Sierra part.

How is the Sierra 18-2162 different from the original Mercruiser slide and screw? The Sierra 18-2162 is manufactured to the same fit and function as the original Mercruiser 33981/8507522 series parts, so it installs as a drop-in equivalent.