Sierra Shift Cable Bellows 18-2753-2, Black, Medium - Replaces Mercury Marine 74639, 74639A2

The Sierra 18-2753-2 is a black, medium-size shift cable bellows designed to seal the point where the shift cable passes into the drive bell housing. It ships with a clamp for a secure installation. This bellows carries a universal fit across All #1 and #2 units, as well as Alpha, Bravo I, II, and III drives, and directly cross-references to Mercury Marine OEM part numbers 74639 and 74639A2, making it a straightforward replacement when the original bellows has cracked, hardened, or is allowing water intrusion at the drive housing.

Sierra also lists this bellows against specific drive model and serial number windows: the Blackhawk drive (1994-1995, S/N 0F18677 and up), the II drive (1962-1969, S/N 1474909-2671321), and the 215E drive (1970-1972, S/N 2909035-2915034). The bellows measures 0.39 x 0.39 x 0.39 inches and weighs 0.12 pounds, with a machined exterior finish. All Sierra parts, including this bellows, are covered under Sierra's customer satisfaction warranty.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2753-2
• Color: Black
• Size: Medium
• Weight: 0.12 pounds
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Exterior Finish: Machined
• Fit Type: Universal Fit
• Includes: Clamp
• UPC: 808282187729
• OEM Cross Reference: 74639, 74639A2

Fitment

• All #1, #2 units, Alpha, Bravo I, II, III
• Blackhawk drive, 1994-1995, S/N 0F18677 and up
• II drive, 1962-1969, S/N 1474909-2671321
• 215E drive, 1970-1972, S/N 2909035-2915034

Replaces (OEM)

• Mercury Marine 74639
• Mercury Marine 74639A2

Frequently Asked Questions

What does the Sierra 18-2753-2 shift cable bellows fit? This bellows has a universal fit for All #1 and #2 units, plus Alpha, Bravo I, II, and III drives. It is also listed for the Blackhawk drive (1994-1995, S/N 0F18677 and up), the II drive (1962-1969, S/N 1474909-2671321), and the 215E drive (1970-1972, S/N 2909035-2915034).

Is the 18-2753-2 an OEM or aftermarket part? It is a Sierra aftermarket bellows that cross-references to Mercury Marine OEM part numbers 74639 and 74639A2, so it installs as a direct equivalent to the original bellows.

What color and size is this bellows? The 18-2753-2 is black and sized medium, measuring 0.39 x 0.39 x 0.39 inches.

How much does the shift cable bellows weigh? Sierra part 18-2753-2 weighs 0.12 pounds.

What is included with the 18-2753-2? The bellows ships with a clamp for installation.

Which Mercury Marine part numbers does 18-2753-2 replace? It replaces Mercury Marine 74639 and 74639A2.

Does the fit differ between the Blackhawk, II, and 215E drives? Yes, each covers a different serial number window: the Blackhawk drive from S/N 0F18677 and up (1994-1995), the II drive from S/N 1474909-2671321 (1962-1969), and the 215E drive from S/N 2909035-2915034 (1970-1972), so confirm your drive's serial number before ordering.

What is the exterior finish on this bellows? The 18-2753-2 has a machined exterior finish.

What is the UPC for the Sierra 18-2753-2? The UPC is 808282187729.

Is this bellows covered by a warranty? Yes, the 18-2753-2 is covered under Sierra's customer satisfaction warranty like all Sierra parts.

What is a shift cable bellows used for? It forms a flexible seal around the shift cable where it enters the drive bell housing, which is what the 18-2753-2 is designed to do on compatible units.

Will the 18-2753-2 fit a 215H or TR/TRS drive? No, those drives use different bellows part numbers; the 18-2753-2 is specified for the Blackhawk, II, and 215E drives listed above along with the All #1, #2, Alpha, and Bravo I/II/III units.