Sierra Exhaust Bellows 18-1074, Replaces 3850426, Fits Cone Clutch Models 1994-up

The Sierra 18-1074 Exhaust Bellows is a direct-fit replacement bellows built for cone clutch models (1994-up) that do not use an exhaust boot. It connects the exhaust housing to the drive unit, sealing the exhaust path while accommodating the movement of the drive assembly during operation. The bellows measures 2 5/8 inches inside diameter by 3 inches outside diameter by 7.5 inches in length, matching the dimensions of the original equipment part it replaces, part number 3850426.

Installing a worn or cracked exhaust bellows helps prevent water intrusion and exhaust leaks that can affect drive performance. The bellows is finished in white and ships as a single unit, ready to install as a one-for-one swap for the original part on applicable cone clutch models.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-1074
• Product Type: Exhaust Bellows
• Inside Diameter: 2 5/8 inches
• Outside Diameter: 3 inches
• Length: 7.5 inches
• Color: White
• Weight: 0.8 pounds
• UPC: 808282166922
• Fitment: All cone clutch models (1994-up), not using exhaust boot
• Replaces (OEM): 3850426

Fitment

• All cone clutch models (1994-up) not using exhaust boot

Replaces (OEM)

• 3850426

Frequently Asked Questions

What does the Sierra 18-1074 exhaust bellows fit? The Sierra 18-1074 exhaust bellows fits all cone clutch models (1994-up) that do not use an exhaust boot.

What OEM part number does 18-1074 replace? Part number 18-1074 replaces OEM number 3850426.

What are the dimensions of the 18-1074 exhaust bellows? It measures 2 5/8 inches inside diameter by 3 inches outside diameter by 7.5 inches in length.

How much does the 18-1074 exhaust bellows weigh? The Sierra 18-1074 exhaust bellows weighs 0.8 pounds.

What color is the Sierra 18-1074 bellows? It is white.

Is this bellows compatible with models that use an exhaust boot? No. The 18-1074 exhaust bellows is designed for cone clutch models (1994-up) that do not use an exhaust boot; it is not intended for setups that require a boot.

How many bellows come in a package of the 18-1074? The 18-1074 exhaust bellows is packaged as a single unit.

What is the UPC for the Sierra 18-1074 exhaust bellows? The UPC for this part is 808282166922.

Does the 18-1074 match OEM specifications? Yes, the 18-1074 exhaust bellows is manufactured to the same dimensions as OEM part 3850426, the part it replaces.

What is the purpose of an exhaust bellows like the 18-1074? An exhaust bellows such as the 18-1074 seals the connection between the exhaust housing and drive unit, accommodating movement while containing exhaust flow on cone clutch models (1994-up) without an exhaust boot.