120S
- Saildrive
- Cone clutch
- Folding propeller common
Volvo Penta 120S
- Diesel
Drive specs
| Fuel | Diesel |
|---|---|
| Type | Saildrive |
| Gear ratios | 2.2:1 · 2.5:1 |
|---|---|
| Oil capacity | 2.6 l |
| Propeller system | Single propeller |
Engine oil up to 120S-D; 120S-E takes 75W-90.
Lower unit variants
| Variant | Gear ratio | Year | Identification | Source |
|---|---|---|---|---|
| 120S, 120S-B, 120S-C | 2.2:1 | — | — | Marine Parts Express: Volvo Penta outdrive specifications (oil, capacity, gear ratio) |
| 120S-D | 2.20:1, 2.50:1 | — | — | Marine Parts Express: Volvo Penta outdrive specifications (oil, capacity, gear ratio) |
| 120S-E | 2.20:1, 2.50:1 | — | Synthetic gear oil API GL-5 SAE 75W-90 | Marine Parts Express: Volvo Penta outdrive specifications (oil, capacity, gear ratio) |
Compatible engines
- Volvo Penta MD7B
- Volvo Penta MD17D
- Volvo Penta MD2010
- Volvo Penta MD2020
- Volvo Penta MD2030
- Volvo Penta MD2040
Service points
- Saildrive seal (diaphragm) against the hull
- Drive oil: changing it and checking for water in the oil
- Sacrificial anode on the drive
Troubleshooting
Cooling and temperature
Drive, gearbox and trim
How to identify the drive
The drive has its own plate, separate from the engine's: on the upper gear housing or the transom shield. Saildrive: plate on the gear housing; read the model, product number and serial number.
Compare all drives →Official identification charts
- Volvo Penta SternDrive Models – publication 7738236-4 (12-2006)
Manuals
Spare parts
| Part | Part number | Note | Source |
|---|---|---|---|
| Propeller shaft seal | 3593663 | Two required | Poseidon Marine: saildrive seal kit MS25/120S/130S/150S (3593663) (external link) |
| Bearing housing O-ring | 925256 / 889672 | The 120S comes in two variants depending on version | Poseidon Marine: saildrive seal kit MS25/120S/130S/150S (3593663) (external link) |
| Drain plug O-ring | 955974 | Poseidon Marine: saildrive seal kit MS25/120S/130S/150S (3593663) (external link) | |
| Rubber diaphragm kit (hull seal) | 21389074 | FYB Marine: rubber diaphragm kit for all saildrives 21389074 | |
| Sacrificial anode, zinc | 876286 | Marine Parts Express: The One List 120S Marine Parts Express: The One List 120S-E | |
| Thrust washer/line cutter | 851984 | Marine Parts Express: The One List 120S Marine Parts Express: The One List 120S-E | |
| Sacrificial anode, magnesium (folding propeller hub) | 853430 | Folding propeller | Marine Parts Express: The One List 120S |
| Sacrificial anode, zinc (folding propeller hub) | 852018 | Folding propeller | Marine Parts Express: The One List 120S |
| Drive seal kit | 876391 | Marine Parts Express: The One List 120S Marine Parts Express: The One List 120S-E | |
| Sacrificial anode, magnesium | 876604 | Marine Parts Express: The One List 120S Marine Parts Express: The One List 120S-E |
Exploded views & parts catalogs
- ShopParts catalog (exploded views) 120S-A–E, MS25S
- ShopMarine Parts Express – exploded views, Volvo Penta diesel
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Related models
Service guides
Frequently asked questions about 120S
Where can I find the owner's manual for 120S?
Links to owner's manuals and workshop manuals are available under Manuals.
What fuel does the 120S use?
Volvo Penta 120S runs on diesel.
Sources
- Marine Diesel Engine Manuals – Volvo Penta (external link)
- Marine Parts Express: Volvo Penta outdrive specifications (oil, capacity, gear ratio)
- Volvo Penta – marine engines (external link)
- Volvo Penta – instruction manual (history: marine engines since 1907) (external link)
- Wikipedia: Volvo Penta (en) (external link)
- Wikipedia: Volvo Penta (sv) (external link)
- Poseidon Marine: saildrive seal kit MS25/120S/130S/150S (3593663) (external link)
- FYB Marine: rubber diaphragm kit for all saildrives 21389074
- Marine Parts Express: The One List 120S
- Marine Parts Express: The One List 120S-E
- Volvo Penta workshop manual saildrive 130S/150S (7742984) (external link)
- Volvo Penta: Find the serial number (external link)