1305A603 Mitsubishi THERMOSTAT KIT, Price: 12.85$, Weight: 0.2kg


Make Number Name Availability Weight, kg Ship in, Days Price

Mitsubishi

1305A603

THERMOSTAT KIT

1000

0.2

15-20

12.85$

 

Originals

Make Number Name Availability Weight, kg Processing, days Price  
Mitsubishi
1305A603 
THERMOSTAT KIT
180
0.23
2-3
16.15$
 

Substitutions

Make Number Name Availability Weight, kg Processing, days Price  
Mitsubishi
1305A237 
THERMOSTAT KIT
0
0.15
-
16.36$
Not Available
Mitsubishi
1305A237 
THERMOSTAT KIT
0
0.15
-
16.36$
Not Available

Engine Coolant Thermostat Assembly

Keep your Mitsubishi powerplant healthy with a precise coolant control unit. This thermostat kit locks your engine at the right operating temperature, delivering stable performance, strong cabin heat, and longer engine life. Built for reliable sealing and accurate opening temps, it helps the cooling system work exactly as designed.

Why you need it ️

Engines run best within a narrow temperature window. Too cold wastes fuel and wears parts; too hot risks head gasket damage and warped heads. A quality thermostat shortens warm-up, prevents overheating, and keeps oil viscosity in the sweet spot.

How it works

Inside is a wax pellet actuator that expands with heat. When coolant reaches the calibrated point, the valve opens, routing flow to the radiator. Below that, it stays closed to speed warm-up, using the bypass loop. The result: quick stabilization and steady temps under load, towing, or city traffic.

If it fails

Stuck closed: rapid overheating, boiling coolant, warning light, possible engine damage. Stuck open: slow warm-up, weak heater, rich fuel mix, high consumption, carbon buildup, poor idle. Leaks or weak spring: fluctuating gauge, loss of power on climbs.

Install tips

Fit with new gasket/O-ring, arrow toward flow, bleed air, refill with correct coolant mix, and verify fan cycles. Replace cap if weak.

Compatibility

  • Nativa
  • L200
  • L200 Sportero
  • Nativa/Paj Sport