Leisure & Commercial Inboards - Diesel Expertise That Delivers
At AB Marine, we specialise in the engines that power Auckland — from private launches cruising the Waitematā to commercial vessels operating daily across the Gulf. We’re certified Yanmar diesel specialists and also service Hyundai Seasall and other leading inboard brands.
Whether you’re a weekend boatie or rely on your vessel for work, we’ll make sure your engine runs reliably, efficiently, and without surprises.
What We Offer
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We tailor our inboard servicing to suit your vessel type, hours of use, and location — whether you’re berthed at Westhaven, Pine Harbour, Gulf Harbour, Half Moon Bay, or operating out of the Viaduct.
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From oil and filter changes to advanced diagnostics, our servicing packages are designed to catch issues before they become problems — with full checks on fuel systems, cooling systems, belts, and anodes.
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Tired engine? We’ll assess your options, walk you through rebuild vs replacement, and carry out the work to factory spec — including full commissioning and sea trial support.
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Even slight misalignment can lead to increased wear and vibration. We use precision tools to check and correct alignment, giving you smoother, quieter performance and longer component life.
Common Inboard Engine Issues We Fix
Auckland boaties deal with varied conditions — stop-start use, long idle periods, and salty air. Here are some of the most common issues we see (and fix):
✪ Hard starting or inconsistent idle
✪ Overheating from blocked heat exchangers or impeller failure
✪ Excess smoke, often due to injector or air intake issues
✪ Oil or coolant leaks around gaskets, hoses or coolers
✪ Loss of power or sluggish throttle response
✪ Excessive vibration or rattling underway
✪ Charging system or alternator faults
✪ Belt wear or unexpected alarms
