Mercury Quicksilver Upper Water Pump Gasket 194541 – 40–60 HP 2-Stroke Outboard
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Mercury / Quicksilver Upper Water Pump Gasket 194541
Part Number: 194541 | Service Format: 27-194541 | GTIN: 745061127340
Genuine Mercury / Quicksilver OEM upper water pump gasket for selected Mercury and Mariner outboard lower-unit water pump assemblies. This gasket installs at the upper joint in the water-pump stack, sealing between the pump body and the mating surface above it. Its opening pattern and thickness are matched to the specific pump body and cooling passages in these 3-cylinder 2-stroke outboards — a generic substitute can interfere with sealing and reduce the pump's cooling flow.
Specifications
- Brand: Mercury / Quicksilver
- Part Number: 194541
- Service Format: 27-194541
- Type: Upper water pump gasket
- System: Lower-unit water pump / outboard cooling circuit
- Weight: ~0.02 kg (0.04 lb)
- GTIN / UPC: 745061127340
- Supersedes: 19454
- Current OEM Number: 194541 (27-194541)
- Sierra Cross-Reference: 18-2593
Compatible Applications
Fitment must be confirmed by exact horsepower, model, and serial number. Mercury used several similar upper and lower gaskets in these pump assemblies — selecting by shape alone is not reliable. Always verify against the Mercury parts diagram for your engine before ordering.
- Mercury / Mariner 40 HP 3-cylinder 2-stroke (selected serial ranges)
- Mercury / Mariner 45 HP 3-cylinder 2-stroke (selected serial ranges)
- Mercury / Mariner 50 HP 3-cylinder 2-stroke (selected serial ranges)
- Mercury / Mariner 55 HP 3-cylinder 2-stroke (selected serial ranges)
- Mercury / Mariner 60 HP 3-cylinder 2-stroke (selected serial ranges)
- Selected Jet and BigFoot configurations — verify by serial-number parts diagram
Mercury parts listings confirm 194541 in 55 HP, 60 HP, and related 3-cylinder water-pump and gasket assemblies.
When to Replace
- Any time the water-pump housing is removed for impeller, pump-body, or lower-unit service
- Gasket is flattened, torn, hardened, or shows any sign of previous compression set
- Gasket material is contaminated with fuel, oil, or coolant
- Best practice: replace every gasket in the pump stack during each service — do not reuse
Installation Notes
- Thoroughly clean all mating surfaces before fitting the new gasket
- Install per the applicable Mercury service manual — orientation and sealing-surface prep are critical
- Mercury diagrams show 194541 used together with lower gasket 19701 / 8M0224241 in applicable assemblies — replace both as a set
- Inspect the pump body, impeller, water-tube seal, key, and fasteners while the pump is disassembled
Related Parts & Service Items
- Mercury Quicksilver Water Pump Impeller 19453T – 30–60 HP & Force 75 HP
- Mercury Mariner Quicksilver Water Tube Seal / Grommet 38452
- Mercury Water Pump Base-to-Face-Plate Gasket 27-39625
- Mercury Quicksilver Water Pump Cover-to-Face-Plate Gasket 43033
- Mercury Water Pump-to-Gear-Housing Gasket 27-85610
Parts Desk Insights
Best use case: Replace 194541 as part of a complete water-pump service — not as a stand-alone repair. The upper gasket is inexpensive compared to the labour involved in a second lower-unit teardown, so replacing all gaskets, the impeller, and seals in one go is always the smarter call.
Common customer issue: Ordering by horsepower or visual match instead of the parts diagram. Mercury used multiple gasket designs across overlapping HP ranges and serial runs, and they can look nearly identical. An incorrect gasket may not seal the cooling passages properly, leading to reduced flow or a slow leak. Always verify the part number against your serial-number parts diagram before ordering.
Shipping information
In-stock and OEM parts: ship same or next business day.
Available items are ready for pickup or shipping between one and three days.
Special-order items: timeline confirmed after order.
Returns & warranty
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