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Yanmar YSE12 marine engine

Yanmar YSE12

1967–198012 HP1-cylinderdiesel
Dieselraw water cooledinboard
Manufacturer PageDocumentation

Higher-RPM variant of the YSE8.

Specifications

Power12 HP @ 3,600 RPMCylinders1
Displacement287 cc (17.5 ci)Bore x Stroke70 x 75 mm
Fuel TypeDieselAspirationNaturally Aspirated
CoolingRaw waterDriveInboard
Weight54 kg (119 lb)Fuel Use2.25 L/hr
Oil Capacity3.3 L

Parts for the Yanmar YSE12

21 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 (7)
  • Jabsco Neoprene Pin Drive Pump Impeller (6 Blades, 40mm OD x 19mm W)
    $45.17
    SearchAmazon →
  • Johnson MC97 Pump Impeller 09-806B-1 for Johnson F35 Pumps (6 Blade)
    $39.29
    Buy onAmazon ↗
  • IMPELLER
    fits: Yanmar 2GM , 3GM , 2GM20 , 3GM30, 2QM15, SB8, SB12, SVE8, SVE12, YSB8, YSB12, YSE8, YSE12,
    $38.60
    Buy onAmazon ↗
  • Orbitrade 8-24001 Impeller Kit for Yanmar Engine Cooling Pumps
    $30.23
    Buy onAmazon ↗
  • Yanmar Raw Water Pump V-Belt
    fits: Yanmar YSB12, YSE12 (Replaces # 104514-42780 )
    $13.03
    Buy onAmazon ↗
  • IMPELLER GASKET
    fits: Yanmar 2GM , 3GM , 2GM20 , 3GM30, 2QM15, SB8, SB12, SVE8, SVE12, YSB8, YSB12, YSE8, YSE12,
    $4.46
    Buy onAmazon ↗
  • Zinc / Thermostat Gasket
    $2.76
    SearchAmazon →
Fuel System (1)
  • Yanmar OEM fuel filter / fuel strainer element for YSE12 (also fits YSE8/YSB8/YSB12)
    fits: 104300-55790
    SearchAmazon →
Belts (2)
  • Yanmar V-Belt (HM-23)
    fits: Yanmar 2QM15, YSB12, YSE12
    $16.66
    eBay· $12.95 ↗
  • Drive Belt — Yanmar 2QM15/YSE
    fits: 104514-77350
    $11.63
    eBay· $12.95 ↗
Anodes (9)
  • Zinc Pencil Engine Anode for Yanmar (M8 Thread)
    $20.78
    SearchAmazon →
  • Zinc Anode Block Sb8 Sb12 — Yanmar YSE8/YSE12
    fits: 10421141-300
    $10.58
    SearchAmazon →
  • Yanmar Zinc
    fits: Yanmar SB8, SB12, SVE8, SVE12, YSE8, YSE12
    $9.88
    Buy onAmazon ↗
  • Yanmar YSE 12 engine anode 104211-41300
    fits: 104211-41300
    $7.80
    Buy onAmazon ↗
  • Zinc Pencil Engine Anode for Yanmar YS (M8 Thread)
    $6.63
    SearchAmazon →
  • Anode Zink — Yanmar
    fits: 104211-41300
    $5.29
    Buy onAmazon ↗
  • Orbitrade 8-41300 Zinc Anode for Yanmar Engines (M8)
    $3.94
    Buy onAmazon ↗
  • Yanmar Zinc Gasket
    fits: Yanmar 2QM20, 3QM30, 1GM, 3QM30, 1GM10, 2GM , 3GM , 2GM20 , 2GM20-YEU, 3GM30, 3GM30-YEU, 3
    $3.56
    eBay· $5.00 ↗
  • Yanmar Zinc Plate Gasket
    fits: Yanmar SB8, SB12, SVE8, SVE12, YSE8, YSE12
    $2.72
    SearchAmazon →
Gaskets & Seals (1)
  • Fuel Strainer O-Ring
    fits: Yanmar YSE8, YSE12
    $2.36
    eBay· $9.99 ↗
Other Parts (1)

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

Sailboats with Yanmar YSE12(1)

SABRE 27 (HILL)
Marine Construction Ltd. (UK) · 27ft · 1969–1979