GH Marine  |  SKU: 17B1015

Exhaust Tube for MerCruiser Alpha One & Gen II — 78458A1

Regular price $20.50


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GH MARINE / BELLOWS & RELATED PARTS

About this part

This rubber exhaust tube is referenced to MerCruiser 78458A1 (and Sierra 18-2760) for the bell housing exhaust position on compatible MerCruiser sterndrives, and includes a clamp referenced to Sierra 18-7314. It is an exhaust tube rather than a full exhaust bellows, U-joint bellows, or shift cable bellows; verify the required exhaust configuration and full part number including the A1 suffix before ordering.

Match the application

This exhaust tube is listed for the bell housing exhaust position on the MerCruiser sterndrive models below. Match the drive series and verify whether your exhaust setup requires an exhaust tube or a ribbed exhaust bellows before ordering.

  • MerCruiser · R, MR, Alpha One, Alpha One Gen II

    Year: 1963 and newer

    Bell housing exhaust tube application referenced to 78458A1.

    Application match

  • MerCruiser · Blackhawk

    Year: 1963 and newer

    Bell housing exhaust tube application referenced to 78458A1.

    Application match

  • MerCruiser · #1

    Bell housing exhaust tube application referenced to 78458A1 and Sierra 18-2760.

    Application match

  • MerCruiser · Bravo I, Bravo II, Bravo III

    Bell housing exhaust tube application referenced to 78458A1 and Sierra 18-2760.

    Application match

Numbers to compare

Mercury Mariner / MerCruiser OEM 78458A1, 78458A, 78458, 8M0095485
Mercury Mariner / Quicksilver 78458a 1
Sierra 18-2760 (exhaust tube), 18-7314 (included clamp reference)
GLM 89150 (exhaust tube), 21951, 21965
SEI Marine 9A-108-04TK
OBR Red Rhino MR-943
Mallory 9-72810
CEF 500520K
Related configuration reference Mercury Mariner / MerCruiser 30-803098T1 (transom seal kit configuration using the exhaust tube)
Additional reference numbers 0508711, 0775482

Technical details

Product type Exhaust tube bellow
Brand GH Marine
Material Rubber
Application position Bell housing exhaust

Supplied contents

Exhaust tube Included (referenced to MerCruiser 78458A1 / Sierra 18-2760 / GLM 89150)
Clamp Included (referenced to Sierra 18-7314)

About GH Marine

GH Marine focuses on bellows and related marine service parts. Compare the application details, reference numbers and supplied contents together to select the part for your repair.

Delivery information

Estimated delivery: 7–15 calendar days.

Help with your order

For application questions, have your drive or engine identification and required part number ready.

Contact GH Marine / fitment help · Returns policy

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