Yanmar 1GM
1980–19837.5 HP1-cylinderdiesel
Dieselraw water cooledinboard
Single-cylinder auxiliary diesel. Compact and reliable, popular in boats 20-25ft.
Specifications
| Power | 7.5 HP @ 3,400 RPM | Cylinders | 1 |
| Displacement | 318 cc (19.4 ci) | Bore x Stroke | 75 x 72 mm |
| Fuel Type | Diesel | Aspiration | Naturally Aspirated |
| Cooling | Raw water | Drive | Inboard |
| Weight | 52 kg (115 lb) | Fuel Use | 1.41 L/hr |
| Oil Capacity | 1.3 L | Transmission | KM2A |
Parts for the Yanmar 1GM
58 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 (9)
Sea Water Pump — Yanmar 1GM/1GM10fits: 128170-42200$373.64Buy on
↗- THERMOSTAT$51.84Buy on ↗
Orbitrade 8-24002 Impeller Kit for Yanmar Engine 1GM Cooling Pumps$34.07Buy on ↗
Oil Seal Sea Water Pump — Yanmar 1GM/1GM10fits: 128170-42110$11.63
· $15.68 ↗
Ball Bearing Water Pump — Yanmar 1GM/1GM10fits: 24101-060004$10.58Buy on ↗
Water Seal Sea Water Pump — Yanmar 1GM/1GM10fits: 124240-91450$9.53· $15.78 ↗
Thermostat Gasket — Yanmar 1GM/1GM10/2GM/2GM20/3GM/3GM30fits: 104211-49160$9.53· $15.78 ↗
Water Pump Gasket B — Yanmar 1GM/1GM10/1GM10C/1GM10L/1GM10VEfits: 128170-42090$7.41· $10.00 ↗- Zinc / Thermostat Gasket$2.76Search →
Fuel System (11)
Fuel Injector Nozzle — Yanmar 1GM/2GM/3GMfits: 124770-53001$104.78Buy on ↗
Fuel Pump — Yanmar 1GM/1GM10/2QM20/3QM30fits: 105582-52010$63.51Buy on ↗- Yanmar Air Filter ( Intake Element )fits: Yanmar 1GM$38.08Search →
Air Filter — Yanmar 1GMfits: 128170-12540$29.64· $51.02 ↗
Orbitrade 8-56540 Air Filter Insert for Yanmar 1GM10 Engines$29.10Search →
Air Filter Insert — Yanmar 1GM10fits: 128171-12540$28.58Buy on ↗
Fuel Filter M1 — Yanmar 1GM/2GM/2QM/2YM/3GM/3HM$17.98Search →
Orbitrade 8-55710 Fuel Filter Element for Yanmar Diesel Engines$15.80Buy on ↗- Yanmar Secondary Fuel Filterfits: Yanmar 1GM, 1GM10, 2GM, 2GMF, 3GM, 3GMF, 2GM20, 2GM20F, 2GM20F-YEU, 2GM20-YEU, 3GM30, 3GM3$9.42Buy on ↗
- Yanmar Secondary Fuel Filter O-Ring 1A S-44.0fits: Yanmar Fuel Filter # 104500-55710$2.71Buy on ↗
- Yanmar Nylon Secondary Fuel Filter Housing Bleed Washerfits: Yanmar Fuel Filter # 104500-55710$1.55Search →
Lubrication (8)
Mann W 67/1 Spin On Oil Filter for Kubota Nanni Beta Yanmar$16.90Search →
Fram FT5447 Spin-On Oil Filter for Honda, Mitsubishi & Yanmar Engines$16.00Search →
Yanmar 119305-35170 Oil Filter for TNV & Some TNE Series Engines$15.76Buy on ↗
Mann L10199US Marine Spin-On Oil Filter Element M20 x 1.5mm$11.07Search →
Oil Filter Kubota Onan — Yanmarfits: 119305-35151$10.58Buy on ↗- Yanmar Oil Filterfits: Yanmar 1GM, 1GM10, 2GM, 2GMF, 3GM, 3GMF, 2GM20, 2GM20F, 2GM20F-YEU, 2GM20-YEU, 3GM30, 3GM3$10.24Buy on ↗
Oil Filter Genuine — Yanmarfits: 119305-35151$9.53Buy on ↗
Oil Pump Gasket B — Yanmar 1GM/1GM10/1GM10C/1GM10L/1GM10VEfits: 128170-32030$3.18Search →
Belts (2)
Anodes (6)
Zinc Pencil Engine Anode for Yanmar (M8 Thread)$20.78Search →
Orbitrade 8-20020 Zinc Anode for Yanmar Engines 1GM and 6LY3$19.96Search →
Zinc Pencil Engine Anode for Yanmar YS (M8 Thread)$6.63Search →- Yanmar Zincfits: Yanmar 1GM, 1GM10, 6LY3-UTP, 6LY3-STP, 6LY3-ETP$6.44Buy on ↗
- Yanmar 1GM engine anode 27210-200200fits: 27210-200200$5.17Buy on ↗
- Yanmar Zinc Gasketfits: Yanmar 2QM20, 3QM30, 1GM, 3QM30, 1GM10, 2GM , 3GM , 2GM20 , 2GM20-YEU, 3GM30, 3GM30-YEU, 3$3.56· $5.00 ↗
Electrical (4)
Starter Motor V30 — Yanmar 1GM/2GM/3GMfits: 20307$315.42Buy on ↗
Ignition Switch With A Panel — Yanmar 1GM/2GM/3GMfits: 124070-91250$137.59· $126.63 ↗
Start Switch — Yanmar 1GM/2GM/3GM/2QMfits: 124070-91300$61.39Buy on ↗
Oil Pressure Sender Switch 4Lh — Yanmar 1GM/2GM/3JH/4JHfits: 124060-39452$21.18Buy on ↗
Gaskets & Seals (6)
Gasket Kit V12 — Yanmar 1GMfits: 20612$204.28Buy on ↗
Orbitrade 60000 Gasket & O-Ring Kit for Yanmar Engines 1GM (7HP)$195.76Buy on ↗
Cylinderhead Gasket — Yanmar 1GMfits: 128170-01331$59.27Buy on ↗- Valve Cover Gasket B — Yanmar 1GM/1GM10/1GM10C/1GM10L/1GM10VEfits: 128170-11310$11.63Search →
Valve Stem Seal — Yanmar 1GM/2GM/3GM/3HMfits: 124950-11340$6.35Buy on ↗
Gasket Breather Cover — Yanmar 1GM/1GM10fits: 128170-03070$2.12· $9.85 ↗
Exhaust (2)
Service Kits (2)
Engine Mechanical (8)
Cylinder Head Assy — Yanmar 1GM/1GM10fits: 728170-11700$1,452.24Search →
Mount Front Marked 70 — Yanmar 1GM/1GM10fits: 128170-08350$193.71Search →
Mount Rear Marked 50 — Yanmar 1GM/1GM10fits: 128170-08340$193.71Search →
Piston Assy — Yanmar 1GM/2GM/2GMF/3GM/3GMF/3GMDfits: 121000-22090$150.30Search →
R&D Flexible Engine Mount 1GM10 for Yanmar Engines (40-131LBS)$79.87Search →
Connecting Rod Bearing Pair Standard Dimension Original — Yanmar 1GM/1GM10/2GM/2GM20/3GM/3GMDfits: 705311-23600$39.16Buy on ↗
Connecting Rod Bearing Pair Standard Dimension — Yanmar 1GM/1GM10/2GM/2GM20/3GM/3GMDfits: 705311-23600$31.75Buy on ↗
Inlet Valve M1 — Yanmar 1GM/2GM/3GM$28.58Search →
Part data aggregated from marine-diesel parts catalogues. As an Amazon Associate, SailPages earns from qualifying purchases.
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