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Engine Spare Parts

Wear and service parts for outboard and inboard engines of all common brands.

Filter products

Sealing rings – BoatBay product illustration
MarinTec Crankshaft Sealing Ring NBR

Radial shaft sealing ring, 25×35×7 mm, in fuel- and oil-resistant NBR with spring-loaded sealing lip. Fits the crankshaft upper side of many Yamaha 6–15 hp outboards. Always replace when servicing the powerhead.

Regular price: €8.95
Sealing rings – BoatBay product illustration
MarinTec Cylinder Head Gasket Kit F9.9/F15

Multi-layer steel head gasket with matching valve cover and exhaust gaskets for 9.9 and 15 hp four-stroke outboards. Torque-to-spec instructions included.

Regular price: €39.95
Filters – BoatBay product illustration
MarinTec Fuel Filter with Water Separator

10-micron inline fuel filter with transparent water separator bowl and drain screw. Protects carburettor and injection systems from water and debris in marina fuel. 8 mm hose connections.

Regular price: €16.90
Oils lubricants – BoatBay product illustration
MarinTec Gear Oil SAE 90

Hypoid gear oil SAE 90 for outboard and sterndrive lower units, 1 l bottle with dosing spout. High corrosion protection even with slight water contamination. Change the gear oil at least once per season.

Regular price: €12.90
Sealing rings – BoatBay product illustration
MarinTec Gearbox Sealing Ring Set

Complete 12-piece lower-unit seal kit with propeller shaft and drive shaft sealing rings, O-rings and drain screw gaskets. Matches Mercury 8–20 hp gearboxes. Prevents water ingress into the gear oil.

Regular price: €24.90
Impellers water pumps – BoatBay product illustration
MarinTec Impeller Kit incl. Gaskets

Service kit with neoprene impeller, housing gasket and wear plate O-ring. Replace the impeller every season or 100 running hours to keep the cooling loop safe. Cross-references for Yamaha, Mercury and Tohatsu included.

Regular price: €22.50
Oils lubricants – BoatBay product illustration
MarinTec Marine Grease

Water-resistant lithium complex grease for propeller shafts, steering cables, winches and trailer bearings, 500 g tin. Withstands salt water and pressure washing.

Content: 0.5 Kilogram (€19.80 / 1 Kilogram)

Regular price: €9.90
Filters – BoatBay product illustration
MarinTec Oil Filter Four-Stroke Outboard

Spin-on oil filter with anti-drainback valve for four-stroke outboards from 8 to 60 hp. OEM cross-references for Yamaha, Honda and Suzuki printed on the box.

Regular price: €11.95
Impellers water pumps – BoatBay product illustration
MarinTec Water Pump Repair Kit Complete

Full water pump overhaul in one box: impeller, pump housing with liner, wear plate, gaskets and mounting hardware. The right choice when the housing shows scoring or the pump ran dry.

Regular price: €54.90
Propellers – BoatBay product illustration
PropTech Aluminium Propeller

Three-blade aluminium propeller, 9¼ inch diameter, 10 inch pitch, 8-tooth spline. Rubber hub absorbs shifting shocks. Fits 8–20 hp outboards from Yamaha and Tohatsu.

Regular price: €89.00
Propellers – BoatBay product illustration
PropTech Stainless Propeller

Polished A4 stainless steel three-blade propeller, 13 inch diameter, 19 inch pitch, 15-tooth spline. Stiffer blades give better top speed and holding in turns than aluminium. For 60–115 hp outboards.

Regular price: €329.00
Anodes – BoatBay product illustration
SeaShield Aluminium Trim Tab Anode

Aluminium trim tab anode for fresh and brackish water, higher protective current yield than zinc. Fits common Mercury and Honda mid-range outboards; stainless mounting bolt included.

Regular price: €12.50
Anodes – BoatBay product illustration
SeaShield Zinc Anode Set Outboard

Three-piece zinc anode set for gearbox, trim tab and anti-ventilation plate. For use in salt and brackish water. Replace anodes once 50 % consumed to keep galvanic protection intact.

Regular price: €18.95