Are you a member?
0
-
PRODUCTS
- Anchors, Ropes and Docking Accessories
- Boat Maintenance
- Cabin, Kitchen, BBQ and Decorations
- Canvas, Covers, Biminis and Carpets
- Dinghy & Canoe Accessories
- Electricity and Lighting
- Electronics
- Equipment for Sailing
- Fishing Products
- Gas Tanks and Fittings
- Hardware and Fasteners
- Ladders & Plateform
- Mechanical Motor Parts and More
- Navigation and Publications
- Plumbing, Toilet and Accessories
- Propellers
- Recreational Vehicle Accessories
- Safety and Rescue Equipment
- Seats, Chairs, Tables, Hardware & Accessories
- Steering Accessories
- Trailers
- Ventilation, Hatches and Accessories
- Watersports
- Winterizing
- BRANDS
- CATALOG
- NEWSLETTER
- OUR STORES
- PROMOTIONS
- GIFT CARDS
- CONTACT
- Home>
- Fishing Products>
- Mechanical Motor Parts and More>
- Pistons and components>
- SIERRA SIE18-3900 Piston Ring for Mercury / Mariner 3.5-9.8 HP Outboards, OEM 39-21665A12 Replacement, Standard Size
SIERRA SIE18-3900 Piston Ring for Mercury / Mariner 3.5-9.8 HP Outboards, OEM 39-21665A12 Replacement, Standard Size
Product Code: SIE18-3900
The SIERRA SIE18-3900 Piston Ring is a standard-size replacement part for Mercury and Mariner outboard engines. It is engineered for precise sealing, helping to maintain optimal engine performance and prevent combustion blow-by.
This piston ring is a direct fit for OEM part number 39-21665A12 and is suitable for both 1-cylinder and 2-cylinder small outboards. It is an excellent choice for boat owners, marine technicians, and repair shops seeking a reliable, OEM-compatible solution.
- Compatible with Mercury/Mariner 3.5-4.5 HP (1-cylinder) and 7.5-9.8 HP (2-cylinder) outboard engines
- Direct replacement for OEM part 39-21665A12
- Standard size for accurate fit and effective sealing
- Helps restore engine compression and reduce blow-by
- Sold individually (per each)
- Designed for easy installation during maintenance or repair
Choose the SIERRA SIE18-3900 Piston Ring to keep your small Mercury or Mariner outboard running smoothly and efficiently.
| Warehouse | Qty Avail. | Availability |
|---|---|---|
| Entrepot : St-Eustache | 1 | In Stock |
| Gatineau | - | - |
| Vaudreuil | - | - |