841161 Mechanical Fuel Pump Assembly

Mechanical Fuel Pump — Compatible with select Volvo Penta AQ / BB Gasoline Sterndrives

Which pump is this?

This is Volvo Penta 841161 (also written 0841161 and 841161-3), a complete mechanical diaphragm fuel-pump assembly for gasoline sterndrive and inboard families on this SKU. Compatible with the AQ120B / AQ125 / AQ131 / AQ140 / AQ145 / AQ151 / AQ171 rows and the 230 / 250 / AQ230 / AQ250 / AQ251 rows in the table. Pulse comes from the crankcase. It is not an electric high-pressure pump, not a seawater circulating pump (46-8M0113734 family), and not an outboard 2-stroke or 4-stroke cowl pump.

Signs yours is due

• AQ125 / AQ131 / AQ151 gasoline sterndrive cranks, fires, then dies unless you keep priming — mechanical lift-pump diaphragm tired.
• Fuel weep at the block-mounted pump on a Volvo Penta AQ / BB gasoline engine, while the seawater pump still throws a tell-tale.
• Hot restart soak after a summer shutdown on 120–171 HP AQ rows.
• Not overheat / no tell-tale: that is the seawater circulating pump (neighbor 21FP003), not this fuel pump.

Will it fit?

Compatible with the Volvo Penta gasoline models in the table only: AQ120B, AQ125A/B, AQ131A–D, AQ140A, BB140A, AQ145A/B, BB145A, AQ151A–C, AQ171A/C, 230A/B, AQ230A/B, 250A/B, AQ250A/B, AQ251A. Factory pages on this SKU do not list serial bands — match 841161 / 0841161 / 841161-3 on the pump you remove. Horsepower alone does not prove fit. Diesel Volvo Penta engines and later EFI electric-pump boats are not this page.

Engine horsepower alone does not prove fit. Match the number stamped on the pump you remove to the OEM column.

Brand	Model	Years	Serial	HP	OEM no.
Compatible with Volvo Penta	AQ120B	—	—	120 HP	841161
Compatible with Volvo Penta	AQ140A	—	—	140 HP	841161
Compatible with Volvo Penta	BB140A	—	—	140 HP	841161
Compatible with Volvo Penta	230A	—	—	230 HP	841161
Compatible with Volvo Penta	230B	—	—	230 HP	841161
Compatible with Volvo Penta	AQ125B	—	—	125 HP	841161
Compatible with Volvo Penta	AQ131A	—	—	131 HP	841161
Compatible with Volvo Penta	AQ131B	—	—	131 HP	841161
Compatible with Volvo Penta	AQ131C	—	—	131 HP	841161
Compatible with Volvo Penta	AQ131D	—	—	131 HP	841161
Compatible with Volvo Penta	AQ145A	—	—	145 HP	841161
Compatible with Volvo Penta	AQ145B	—	—	145 HP	841161
Compatible with Volvo Penta	BB145A	—	—	145 HP	841161
Compatible with Volvo Penta	250A	—	—	250 HP	841161
Compatible with Volvo Penta	250B	—	—	250 HP	841161
Compatible with Volvo Penta	AQ151A	—	—	151 HP	841161
Compatible with Volvo Penta	AQ151B	—	—	151 HP	841161
Compatible with Volvo Penta	AQ151C	—	—	151 HP	841161
Compatible with Volvo Penta	AQ171A	—	—	171 HP	841161
Compatible with Volvo Penta	AQ171C	—	—	171 HP	841161
Compatible with Volvo Penta	AQ125A	—	—	125 HP	841161
Compatible with Volvo Penta	AQ230A	—	—	230 HP	841161
Compatible with Volvo Penta	AQ230B	—	—	230 HP	841161
Compatible with Volvo Penta	AQ250A	—	—	250 HP	841161
Compatible with Volvo Penta	AQ250B	—	—	250 HP	841161
Compatible with Volvo Penta	AQ251A	—	—	251 HP	841161

Every row is from this SKU fitment workbook (26 rows after empty-line filter). Same horsepower name shipped different pumps.

OEM and swap numbers

OEM / predecessor numbers keep the engine-brand column. Aftermarket cross-refs are numbers only.

Class	Part no.	Brand	Name
OEM	841161	Compatible with Volvo Penta	Fuel Pump
OEM	0841161	Compatible with Volvo Penta	Fuel Pump
OEM	841161-3	Compatible with Volvo Penta	fuel pump
cross-ref	18-7286	—	841161 / 841161-3
cross-ref	9-35425	—	841161-3

Wrong part

• NOT 46-8M0113734 / 835390 / 3853850 — seawater circulating pump (21FP003).
• NOT 3854017 — a different pump family (21FP002), not this 841161 sterndrive fuel pump.
• NOT outboard pumps 3H6-04000, 692-24410, 6D8-24410, or 63P-24410.
• NOT an electric in-tank or VST high-pressure pump.

What ships

One complete mechanical fuel-pump assembly. No seawater pump, no hose kit, no filter, no rebuild kit.

Often replaced together

Seawater circulating pumps for GM-block Volvo / MerCruiser are a different SKU (21FP003). Outboard mechanical pumps are other GHMarine pages. Filters and primer bulbs are sold separately.

Install

This is a sterndrive / inboard block pump, not an outboard cowl pump. Shut the tank, relieve pressure, catch fuel. Photograph the pulse hose versus fuel inlet and outlet. Remove the flange screws, keep the old gasket for the pulse-hole layout, and clean the pad. Seat the new gasket so the pulse passage lines up — 180° off looks like a dead pump. Snug evenly. Prime, leak-check at idle in the slip before you load the boat. If it still will not pick up fuel, check the tank vent and primer before you blame the new pump.

Frequently Asked Questions

Will this fit my Volvo Penta AQ131 / AQ151?

AQ131A–D and AQ151A–C rows are on this table with 841161. Still match the stamp on the pump you remove. Diesel engines are not this page.

Will this fit 230 / 250 HP Volvo Penta?

230A/B, AQ230A/B, 250A/B, AQ250A/B and AQ251A gasoline rows are in the table. Confirm 841161 on the old pump.

Is this the seawater pump?

No. Mechanical fuel pump. Overheat / weak tell-tale is the circulating pump (21FP003), not 841161.

Is 841161-3 the same?

841161-3 and 0841161 are on this SKU’s OEM list with 841161. Match the physical pump and barb layout.

What ships?

One mechanical fuel-pump assembly. No seawater pump and no hose kit.

Please note

Aftermarket fuel pump by GHMarine. Not affiliated with the engine brands named above. «Compatible with», «Replaces», and cross-ref numbers mean this part is built to work like the originals listed — always confirm the stamp on the removed pump, the engine model, and the serial range before you order. This page is the pump only, not a multi-part kit.