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Volvo Penta AQ131

  • 4 cyl
  • 2.3 l
  • approx. 120 hp
  • Petrol
  • 1985–1993

Engine data

Specifications for Volvo Penta AQ131
Model years1985–1993
Powerapprox. 120 hp
Cylinders4
Displacement2.3 l
FuelPetrol
TypeInboard with sterndrive
DriveAquamatic 275 / 290 / 290A

Autumn and spring plan for Volvo Penta AQ131

Here's what to do when hauling out and launching. Always follow the instruction book for your engine.

Autumn

  • Change the engine oil and oil filterOil filter 3517857 · 4 l SAE 10W/30, SE (MS) or SF; SF/CC and SF/CD meet the requirementsBuy: Marinshopen · Benns
  • Remove the impeller and store it dryImpeller kit 21951350Buy: Marinshopen · Benns
  • Replace the fuel filter and water separatorFill the tank to reduce condensation.
  • Winterise the raw water systemLet the engine draw in antifreeze until it comes out of the exhaust, or drain the system as described in the owner's manual.
  • Check the coolant's antifreeze protection
  • Fog the cylinders with fogging oil if the manufacturer specifies it
  • Check anodes, belts and hoses
  • Fully charge the batteries and disconnect the negative terminal

Spring

  • Fit the impellerImpeller kit 21951350 · Replace it if it is stiff or cracked.Buy: Marinshopen · Benns
  • Check belts, hoses, oil level and coolant
  • Check the drive bellows, propeller and drive anodes
  • Check through-hulls, seacocks and hose clamps
  • Charge and connect the batteries, clean the terminals
  • After launching, check that nothing is leakingStart the engine and check that cooling water flows out evenly.
Add to calendarTick off in the service bookTwo reminders a year: in April and in October.

Email me the plan

Service data

Troubleshooting

Starting problems

Runs rough, stalls or loses power

Smoke and exhaust

Cooling and temperature

Oil, water and fuel

Electrics, alarms and fault codes

Drive, gearbox and trim

Manuals

Spare parts

Spare parts for Volvo Penta AQ131
PartPart numberNoteSource
Impeller kit219513501 pcsBuy (7)Alternatives: 5replaces 875575Volvo Penta Shop – 21951350 (external link)
Power Products Systems (Volvo Penta dealer) – AQ131A–D Sea Water Pump (powerproductsystems.com)
Spark plugsNGK BP7ES4 pcsBuy (2)NGK number, not Volvo Penta numberNGK Part Finder – Volvo Penta AQ131 (external link)
Oil filter35178571 pcsBuy (7)Alternatives: 2Power Products Systems (Volvo Penta dealer) – AQ131A–D Lubricating System (powerproductsystems.com)
V-belt9663821 pcsBuy (3)Power Products Systems (Volvo Penta dealer) – AQ131A–D Cooling System (powerproductsystems.com)
Thermostat kit8755801 pcsBuy (2)Volvo Penta Shop – 875580 (external link)

Exploded views & parts catalogs

Parts shared with

  • AQ151 4 shared part numbers
  • AQ125 3 shared part numbers
  • AQ145 2 shared part numbers

Listings for AQ131

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Related models

AQ95

Inboard with sterndrive

Petrol

AQ105

Inboard with sterndrive

4 cyl · Petrol

AQ115

Inboard with sterndrive

4 cyl · Petrol

AQ120B

Inboard with sterndrive

4 cyl · 110 hp · Petrol

Service guides

Replacing the impeller →Winterize a boat engine →Find the engine number →

Frequently asked questions about AQ131

How much oil does the AQ131 take?

AQ131 takes about 4 litres of engine oil including the filter.

What is the valve clearance on the AQ131?

Intake mm and exhaust mm, cold engine, adjustment value.

Where can I find the owner's manual for AQ131?

Links to owner's manuals and workshop manuals are available under Manuals.

How many cylinders does AQ131 have?

Volvo Penta AQ131 has 4 cylinders.

What fuel does the AQ131 use?

Volvo Penta AQ131 runs on petrol.

Which impeller fits the AQ131?

Part number 21951350 is listed for this model.

Sources

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