ATHENA Water Pump Rebuild Kit ref. P400270475026 for KTM, HUSQVARNA and GAS GAS 2023-2027

The ATHENA P400270475026 water pump rebuild kit is designed for KTM EXCF 250, EXCF 350, SXF 250, SXF 350, XCF 250, XCF 350, GAS GAS ECF 250, ECF 350, EXF 250, EXF 350, MCF 250, MCF 350 and HUSQVARNA FC 250, FC 350, FE 250, FE 350, FX 350 from 2023 to 2027. 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: P400270475026
• EAN code: 8053300719563
• Weight: 150 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 500 ml
• Clutch cover gasket : MOOSE · CENTAURO

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 ECF 250 2025
GAS GAS ECF 250 2024
GAS GAS ECF 250 2023
GAS GAS ECF 350 2026
GAS GAS ECF 350 2025
GAS GAS ECF 350 2024
GAS GAS EXF 250 2025
GAS GAS EXF 250 2024
GAS GAS EXF 350 2025
GAS GAS EXF 350 2024
GAS GAS MCF 250 2027
GAS GAS MCF 250 2026
GAS GAS MCF 250 2025
GAS GAS MCF 250 2024
GAS GAS MCF 350 2025
GAS GAS MCF 350 2024
HUSQVARNA FC 250 2027
HUSQVARNA FC 250 2026
HUSQVARNA FC 250 2025
HUSQVARNA FC 250 2024
HUSQVARNA FC 250 2023
HUSQVARNA FC 350 2027
HUSQVARNA FC 350 2026
HUSQVARNA FC 350 2025
HUSQVARNA FC 350 2024
HUSQVARNA FC 350 2023
HUSQVARNA FE 250 2027
HUSQVARNA FE 250 2026
HUSQVARNA FE 250 2025
HUSQVARNA FE 250 2024
HUSQVARNA FE 350 2027
HUSQVARNA FE 350 2026
HUSQVARNA FE 350 2025
HUSQVARNA FE 350 2024
HUSQVARNA FX 350 2026
HUSQVARNA FX 350 2025
HUSQVARNA FX 350 2024
HUSQVARNA FX 350 2023
KTM EXCF 250 2027
KTM EXCF 250 2026
KTM EXCF 250 2025
KTM EXCF 250 2024
KTM EXCF 350 2027
KTM EXCF 350 2026
KTM EXCF 350 2025
KTM EXCF 350 2024
KTM SXF 250 2027
KTM SXF 250 2026
KTM SXF 250 2025
KTM SXF 250 2024
KTM SXF 250 2023
KTM SXF 350 2027
KTM SXF 350 2026
KTM SXF 350 2025
KTM SXF 350 2024
KTM SXF 350 2023
KTM XCF 250 2027
KTM XCF 250 2026
KTM XCF 250 2025
KTM XCF 250 2024
KTM XCF 250 2023
KTM XCF 350 2027
KTM XCF 350 2026
KTM XCF 350 2025
KTM XCF 350 2024
KTM XCF 350 2023