EMP 61-00500 Exhaust Bellow with Clamps for MerCruiser Alpha One Gen II, Bravo I/II/III, Blackhawk - Replaces Mercury 18654A1, Sierra 18-2750

The EMP 61-00500 Exhaust Bellow with Clamps is a replacement exhaust bellow assembly for MerCruiser sterndrive exhaust systems, supplied complete with clamps for a ready-to-install setup. The exhaust bellow forms the flexible connector between the engine's exhaust manifold and the drive unit, routing exhaust gases (and, on many installations, cooling water) through the transom while accommodating the movement of the drive as it trims and steers. Because this component sits in a wet, high-heat environment behind the transom, a worn, cracked, or split bellow is a common source of water intrusion into the bilge, making timely replacement important for keeping the boat dry and the engine bay protected.

The EMP 61-00500 is built as a direct equivalent to Sierra 18-2750 and is designed to fit a range of MerCruiser sterndrives, including Alpha One Gen II, Bravo I/II/III, and Blackhawk applications within the serial number ranges listed below. It replaces Mercury part number 18654A1 and cross-references to GLM 89100 and Mallory 9-72703. The kit includes the mounting clamps needed for installation, so no separate clamp purchase is required. This is a straightforward transom-area replacement part intended for boat owners and marine technicians performing routine exhaust bellow service or repairing a failed bellow.

Specifications

• Brand: EMP
• Manufacturer Part Number: 61-00500
• Product Type: Exhaust Bellow with Clamps
• UPC: 840080473635
• Weight: 0.695 pounds
• Product Dimensions: 3.5 x 3.5 x 5.5 inches
• Includes: Clamps
• OEM Cross Reference: Mercury 18654A1, Sierra 18-2750, GLM 89100, Mallory 9-72703

Fitment

• MerCruiser Alpha One Gen II, 1991 and newer, serial number 0D469859 and up
• MerCruiser Bravo I/II/III, 1988 and newer, serial number 0B664190 and up
• MerCruiser Blackhawk, 1994-1995, serial number 0F18677 and up

Replaces (OEM)

• Mercury 18654A1
• Sierra 18-2750
• GLM 89100
• Mallory 9-72703

Frequently Asked Questions

What does the EMP 61-00500 exhaust bellow fit? The EMP 61-00500 fits MerCruiser Alpha One Gen II drives from 1991 and newer (serial number 0D469859 and up), Bravo I/II/III drives from 1988 and newer (serial number 0B664190 and up), and Blackhawk drives from 1994-1995 (serial number 0F18677 and up).

Is the EMP 61-00500 the same as Sierra 18-2750? Yes, the EMP 61-00500 is a direct equivalent to Sierra part number 18-2750 and can be used as a replacement for it.

Does this exhaust bellow replace a Mercury OEM part number? It replaces Mercury part number 18654A1, so it can be installed wherever that Mercury bellow is called for.

Are clamps included with the EMP 61-00500? Yes, the EMP 61-00500 Exhaust Bellow ships with clamps included, so no separate clamp purchase is needed for installation.

What are the dimensions of the EMP 61-00500 exhaust bellow? The EMP 61-00500 measures 3.5 x 3.5 x 5.5 inches.

How much does the EMP 61-00500 weigh? The EMP 61-00500 Exhaust Bellow with Clamps weighs 0.695 pounds.

Does the EMP 61-00500 cross-reference to any other aftermarket brands? Yes, in addition to Sierra 18-2750, the EMP 61-00500 crosses to GLM 89100 and Mallory 9-72703.

Will the EMP 61-00500 fit a MerCruiser Bravo I drive? Yes, this bellow fits Bravo I, II, and III drives built 1988 and newer with serial number 0B664190 and up.

What symptom indicates this exhaust bellow needs replacing? A cracked, split, or deteriorated exhaust bellow can allow water into the bilge, which is the main reason boat owners replace a bellow like the EMP 61-00500.

Does the EMP 61-00500 fit a MerCruiser Blackhawk drive? Yes, it fits Blackhawk drives from 1994-1995 with serial number 0F18677 and up.