ATHENA Water Pump Rebuild Kit for KTM, HUSQVARNA and GAS GAS 2023-2025

The ATHENA P400270470020 water pump rebuild kit is designed for KTM EXCF 450, EXCF 500, SXF 450, XCF 450, XCFW 450, HUSQVARNA FC 450, FE 450, FS 450, FX 450 and GAS GAS EXF 450, MCF 450 from 2023 to 2025. The water pump circulates the coolant. When its oil seal or bearing wears, coolant gets into the oil or leaks out of the weep hole: the engine overheats and the oil breaks down.

Specifications

• Brand: ATHENA
• Manufacturer part number: P400270470020
• EAN code: 8053300719570
• Weight: 120 g
• Engine: 4-stroke

When to replace it?

• Drip of coolant or oil at the weep hole under the pump.
• Milky engine oil (mixed with coolant).
• Coolant level dropping with no visible leak, engine running hot.

During an engine rebuild, and as soon as a leak appears at the weep hole.

Fitting tips

1. Drain the cooling system, and the oil if necessary.
2. Drive out the bearing and oil seals without damaging the housing, then fit the new parts perfectly square.
3. Lightly grease the oil seal lips before sliding the shaft through.
4. Fill with fresh coolant, bleed the system and refill with oil if you drained it.

Why ATHENA?

Athena, an Italian company founded in 1973 near Vicenza, designs gaskets, pistons and cylinder kits for motorcycles. An OEM supplier to KTM, Ducati, Fantic, Piaggio and Triumph and a partner of the MXGP world championship, it develops its parts on the test bench and on the track with racing teams.

Spare parts and items to plan

• Coolant : LIQUI MOLY 1 L · TWIN AIR
• Gearbox oil : LIQUI MOLY 10W30 1 L · LIQUI MOLY 1 L
• Clutch cover gasket : ATHENA · PROX

Frequently asked questions

What does the kit contain?
Depending on the model: gaskets, O-rings, oil seals and pump bearing(s). If in doubt, compare with your original parts.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
GAS GAS EXF 450 2024
GAS GAS MCF 450 2024
HUSQVARNA FC 450 2025
HUSQVARNA FC 450 2024
HUSQVARNA FC 450 2023
HUSQVARNA FE 450 2024
HUSQVARNA FS 450 2025
HUSQVARNA FS 450 2024
HUSQVARNA FX 450 2024
HUSQVARNA FX 450 2023
KTM EXCF 450 2024
KTM EXCF 500 2024
KTM SXF 450 2025
KTM SXF 450 2024
KTM SXF 450 2023
KTM XCF 450 2025
KTM XCF 450 2024
KTM XCF 450 2023
KTM XCFW 450 2024