27-161602 Mercury MerCruiser Gasket Lower | Genuine Quicksilver OEM Part
27-161602 Mercury MerCruiser Gasket Lower | Genuine Quicksilver OEM Part
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🔧 Product Description
Genuine Quicksilver Lower Water Pump Gasket - Part Number: 27-161602
Genuine Quicksilver lower water pump gasket used in Mercury / Mariner outboard lower-unit water pump assemblies. This gasket seals the lower part of the water pump stack and is replaced during impeller, face plate, pump base or gearcase cooling service.
⚙️ Key Features
- Genuine Quicksilver OEM lower water pump gasket
- Correct Mercury part number 27-161602
- Used in outboard lower-unit water pump assemblies
- Helps seal the water pump base / face plate area
- Recommended replacement during every pump rebuild
🚤 Compatibility
Commonly used on
- Mercury / Mariner water pump assemblies
- Lower-unit impeller service
- Outboard pump base gasket replacement
Typically suits
- Engine models:
- Mercury 40HP water pump applications where 27-161602 is specified
- Mercury 45HP water pump applications where specified
- Mercury 50HP water pump applications where specified
- Mercury 55HP water pump applications where specified
- Mercury 60HP water pump applications where specified
- Mercury 65HP / 70HP water pump applications where specified
- Mercury 75HP water pump applications where specified
- Mercury 80HP water pump applications where specified
- Mercury 90HP water pump applications where specified
- Mercury 100HP water pump applications where specified
- Mercury 115HP water pump applications where specified
- Mariner 40HP through 115HP matching water pump assemblies where specified
- HP Range: commonly 40HP - 115HP where specified
- Engine Type: Mercury / Mariner outboard
- System Type: Lower water pump gasket
🔌 Function
The gasket seals the lower water pump stack so the impeller can draw and pressurise cooling water without leakage at the base.
⚠️ Common Signs of Failure
- Weak tell-tale or cooling water output
- Overheating after pump service
- Gasket torn or compressed
- Pump not priming correctly
- Water leakage around pump base
- Replacement required during full water pump rebuild
🔄 Supersession & Cross Reference
OEM Supersession Chain
- 27-161602 current OEM gasket reference
- 27-16160 earlier formatted gasket family reference
OEM / Related Numbers
- 27-161602
- 161602
- 27-16160
- Lower water pump gasket
- Water pump base gasket
- Face plate gasket
- Gearcase cooling gasket
- 28-8M0204723 related impeller key
- 27-8M0090319 related water pump gasket family
Aftermarket / Verified Equivalents
- Sierra water pump gasket equivalents where matched to 27-161602
- GLM water pump gasket equivalents where matched to the pump stack
- WSM / aftermarket gasket equivalents by exact water pump kit application
- Use exact gasket passage shape to avoid cooling flow restriction
📦 Condition
- Genuine Quicksilver part
- Brand new
- Supplied in original or equivalent packaging
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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