The OEM mount part number is normally stamped on the side or end of the original mount, or referenced in the engine manufacturer's parts manual or workshop manual. Common marine engine makes (Volvo Penta, Mercury, Yanmar, Caterpillar Marine, MAN Marine) each maintain specific mount part-number cross-references for their engine ranges. Where the part number isn't visible, identify by engine make, model, year, and the mount position (front-port, front-starboard, rear-port, rear-starboard). WhatsApp 07754288583 with engine details and a photograph for cross-reference.
The engine output shaft must align with the propeller-shaft coupling within the manufacturer's tolerance (typically 0.05-0.1mm misalignment maximum across the coupling). Misalignment beyond tolerance causes accelerated wear of the propeller-shaft bearings, the gearbox output bearing, and the engine rear main bearing. Adjustable engine mounts have a threaded stud that allows each mount's height to be tuned independently — bringing the engine output coupling into alignment with the propeller-shaft coupling. The procedure: tighten the propeller-shaft, then adjust each mount until alignment is achieved.
Marine engine mounts in normal pleasure-craft service typically last 10-15 years before rubber compression-set and wear become significant. Heavier service (commercial fishing, charter operations, heavy-load workboat use) typically gives 5-10 year mount life. Symptoms of mount failure: visible rubber cracking or separation from the steel components, excess engine-vibration transmitted to the hull, alignment drift between the engine and propeller-shaft coupling, sagged engine height (the boat's engine sitting lower in the bilge than originally). Replace mounts at the first symptoms — failed mounts damage the propeller-shaft and engine bearings.
Yes. Replacement mount studs (matched by thread size and length to the original), threaded-insert kits (where the stud bottoms into a captive nut), serrated locking washers (preventing the stud from rotating loose under engine vibration), Nyloc self-locking nuts (for the engine-side mounting), and matched hardware kits are available across the marine mount range. Always specify the manufacturer's recommended hardware — undersized studs or wrong-pattern locking washers cause premature failure under marine dynamic loading.
Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.
Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.
Within Marine Mounts, Marine Mount covers the individual marine-application mounts at the unit level — covering the cylindrical, conical, and specific OEM-pattern mounts used to mount marine engines, gearboxes, and auxiliary equipment to the hull and engine-bed structure of leisure boats, commercial vessels, and workboats.
Parts for Machines supplies marine mounts at the unit level — covering both the standard marine-mount geometries (cylindrical mounts with adjustable threaded studs for engine alignment, conical mounts for gearbox and auxiliary equipment, sandwich mounts for flat-mount applications) and the specific OEM-pattern mounts matched to particular marine engine and gearbox manufacturers.
Product pages list the mount type (cylindrical adjustable, conical fixed, sandwich), the rated static load (typical 50kg-1,500kg per mount, depending on the engine size and number of mounts), the dynamic load rating (allowing for engine torque, propeller-thrust, and wave-loading), the rubber compound (marine-grade rubber rated for salt-water exposure, fuel-and-oil contact, and the dynamic loads of marine operation), the height-adjustment range (most engine mounts have an adjustable threaded stud allowing engine alignment in three planes; typical 25-40mm adjustment range), the mounting-stud thread (typical M14, M16, M20), the mount overall dimensions, and the OEM cross-reference where applicable.
For replacement of an existing marine mount at the unit level, the OEM part number from the engine or gearbox manufacturer is the most reliable match. Where the OEM number is not available, identify by the mount type, dimensions, load rating, and stud-thread specification. Always replace mounts in matched sets — replacing only one mount in a multi-mount installation leaves the others under unequal load and accelerates failure. Trade pricing on bulk and chandlery-supply orders is available; contact the team via WhatsApp 07754288583.
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