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Universal M-12 marine engine

Universal M-12

1984–199012 HP2-cylinderdiesel
Dieselraw water cooledinboard
Manufacturer PageDocumentation

First Universal diesel. Replaced the Atomic 4 in smaller boats.

Specifications

Power12 HP @ 3,400 RPMCylinders2
Displacement508 cc (31.0 ci)Bore x Stroke67 x 72 mm
Fuel TypeDieselAspirationNaturally Aspirated
CoolingRaw waterDriveInboard
Weight98 kg (215 lb)Fuel Use2.25 L/hr

Parts for the Universal M-12

9 catalogued parts. Prices are reference figures; each “Find on Amazon” link opens a search for that part — confirm fitment against your engine's serial before ordering.

Cooling System (1)
Fuel System (2)
  • Fuel Filter
    fits: Universal M-35B, M-50B, M-15, M3-20, M-12, M-18, M-20, M-25, M-25XP, M-35, M3-20B, M4-30,
    $37.40
    Buy onAmazon ↗
  • Fuel Lift Pump Filter
    fits: Universal M-12, M-18, M-20, M-25, M-25XP, M-30, M-35, M-40, M4-30, M-50, M2-12, M3-20, M3-
    $20.40
    SearchAmazon →
Lubrication (1)
  • Oil Filter
    fits: Universal M-25 XPB, M-35B, M3-20, M-12, M-18, M-25, M-25XP, M-35, M3-20B, M4-30, M2-12, M-
    $18.20
    Buy onAmazon ↗
Belts (1)
  • Belt, Fan 36.6 x O
    fits: Universal M-12
    $79.80
    SearchAmazon →
Anodes (1)
  • Zinc 1/8NPT x 2
    fits: Universal M-12, M-18, M-20, M-30, M2-12, M-50
    $14.80
    Buy onAmazon ↗
Electrical (1)
  • Glowplug
    fits: Universal M3-20, M4-30, M-12, M-18, M-20, M-25, M-25XP, M-30, M-35, M2-12
    $73.40
    eBay· $17.97 ↗
Service Kits (1)
  • Parts Kit B
    fits: Universal M-12
    $1,833.60
    SearchAmazon →
Other Parts (1)
  • Screen-20 Mesh
    fits: Universal M-12 and M2-12
    $330.00
    SearchAmazon →

Part data aggregated from marine-diesel parts catalogues. As an Amazon Associate, SailPages earns from qualifying purchases.