2688397A1 Mercury MerCruiser Seal Kit | Genuine Quicksilver OEM Part
2688397A1 Mercury MerCruiser Seal Kit | Genuine Quicksilver OEM Part
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🔧 Product Description
Genuine Quicksilver Alpha One Gen II Driveshaft Housing Seal Kit - Part Number: 26-88397A1
A genuine Quicksilver upper driveshaft-housing seal kit for Mercury MerCruiser Alpha One Gen II sterndrives.
The kit contains the seals, O-rings, grommets and related components required to reseal the upper drive housing after input-shaft, driveshaft, bearing or gear service.
⚙️ Key Features
- Genuine Quicksilver OEM driveshaft-housing seal kit
- Correct Mercury part number 26-88397A1
- Designed for Alpha One Gen II upper housings
- Used on later 0M400412-and-above drive applications
- Sierra, GLM, Mallory, Recmar and OMC equivalents available
🚤 Compatibility
Commonly used on
- MerCruiser Alpha One Gen II upper driveshaft housings
- Upper gearcase overhaul and resealing procedures
Typically suits
- Drive models:
- MerCruiser Alpha One Gen II - 1991 and later
- MerCruiser Alpha One Gen II drives from serial 0M400412 and above
- MerCruiser Alpha One Gen II standard-rotation upper housings
- MerCruiser Alpha One Gen II counter-rotation assemblies where 26-88397A1 is specified
- 2004 and later Alpha One Gen II service applications
- Drive Type: MerCruiser Alpha One Gen II
- System Type: Upper driveshaft-housing seal kit
- Year Range: 1991 onward; principally 2004 and later / serial 0M400412 and above
🔌 Function
The kit restores the seals around the upper driveshaft, input-shaft, bearing and housing passages so the drive retains lubricant and excludes water.
⚠️ Common Signs of Failure
- Gear lubricant in the universal-joint bellows
- Water-contaminated drive oil
- Leakage from the upper housing
- Drive fails pressure or vacuum testing
- Seals damaged during upper-gearcase overhaul
🔄 Supersession & Cross Reference
OEM Supersession Chain
- 26-88397A1 current OEM driveshaft-housing seal-kit reference
- 88397A1 original OEM kit reference
OEM / Related Numbers
- 26-88397A1
- 88397A1
- 2688397A1
- 700-87501 aftermarket kit reference
Aftermarket / Verified Equivalents
- Sierra: 18-2644
- GLM: 87501
- Mallory: 9-74302
- Recmar: REC26-88397A1
- OMC / BRP: 775430
📦 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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