Sierra 18-2745 Exhaust Boot, Replaces 912374, Fits OMC Stern Drive 5.7L & 7.5L 1986 & Later

The Sierra 18-2745 Exhaust Boot is a replacement exhaust boot designed for use with OMC stern drives, specifically fitting 5.7L and 7.5L applications from 1986 and later. It is engineered as a direct replacement for the original equipment exhaust boot, sealing the connection point in the exhaust path to maintain a proper seal as exhaust gases exit the stern drive assembly. Each package includes one exhaust boot, making it a straightforward, single-part replacement for a worn, cracked, or deteriorated original boot.

Sierra states that each Sierra product meets or exceeds the original equipment part it replaces, and the 18-2745 is built to the fitment specifications of the OMC 912374 boot it is designed to replace. Because exhaust boots are fit specific, it is important to check part numbers against your stern drive's original component before ordering to ensure proper fit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2745
• Product Type: Exhaust Boot
• Item Dimensions: 4 x 4.75 x 4.75 inches
• Weight: 0.88 pounds
• UPC: 030999752932
• Package Quantity: 1 exhaust boot per package
• Fitment: OMC stern drive 5.7L & 7.5L (1986 & later)
• OEM Cross Reference: Replaces 912374

Fitment

• OMC stern drive, 5.7L & 7.5L, 1986 & later

Replaces (OEM)

• 912374

Frequently Asked Questions

What does the Sierra 18-2745 Exhaust Boot fit? It is designed for OMC stern drives with 5.7L and 7.5L engines, model year 1986 and later.

What OEM part number does the 18-2745 replace? The Sierra 18-2745 Exhaust Boot replaces OMC part number 912374.

How many exhaust boots come in a package? One exhaust boot is included per package of the Sierra 18-2745.

Is the Sierra 18-2745 an OEM part or an aftermarket replacement? It is an aftermarket replacement manufactured by Sierra, built to meet or exceed the original equipment exhaust boot it replaces.

What are the dimensions of the 18-2745 exhaust boot? The boot measures 4 x 4.75 x 4.75 inches.

How much does the Sierra 18-2745 Exhaust Boot weigh? It weighs 0.88 pounds.

Will the 18-2745 fit any OMC stern drive engine size? No, this exhaust boot is fit specific and is designed for 5.7L and 7.5L OMC stern drive engines from 1986 and later, so part numbers should be checked against the original component before ordering.

What is the UPC for the Sierra 18-2745 Exhaust Boot? The UPC for the Sierra 18-2745 Exhaust Boot is 030999752932.

Where is the exhaust boot installed on a stern drive? The 18-2745 exhaust boot is installed at the exhaust connection point on OMC stern drives with 5.7L and 7.5L engines to seal the exhaust path.

Why replace a worn exhaust boot like the 18-2745? A cracked or deteriorated exhaust boot can leak, so replacing it with a properly fitted part like the Sierra 18-2745 helps maintain a sealed exhaust connection on compatible OMC stern drives.

Does Sierra offer a warranty on the 18-2745 Exhaust Boot? Yes, the Sierra 18-2745 Exhaust Boot is covered by a limited warranty.