1621017080 Toyota COUPLING ASSY, FLUID, Price: 193.26$, Weight: 2.174kg


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

Toyota

1621017080

COUPLING ASSY, FLUID

86

2.174

2-3

193.26$

 

Originals

Make Number Name Availability Weight, kg Processing, days Price  
Toyota
1621017080 
COUPLING ASSY, FLUID
68
2.5
 Dispatch 48h
231.91$
 

Substitutions

Make Number Name Availability Weight, kg Processing, days Price  
Toyota
9030160002 
RING, O(FOR VANE PUMP)
10
0.003
2-3
5.45$
 
AISIN
FCT074 
FAN CLUTCH TO 16210-17080 COASTER 199907-200108 AISIN
500
2.5
4-5
162.97$
 
NPW
T157F 
FAN COUPLING 1HZ
0
2.317
4-5
53.06$
Not Available

Compatibility

DescriptionModelOptionsProd PeriodDiagram
BB60,BZB60,70,GDB##,HZB60,70,TRB60,70,XZB60,70,80HZB70R-ZGMNSATM,MTM: MANUAL TRANSMISSION; Seating Capacity: 30-SEATER; Building Condition: COMPLETELY BUILT UNIT; Roof: HIGH-ROOF; Driver's Position: RIGHT-HAND DRIVE VEHICLES; Grade: DX TYPE; Fuel Induction: DIESEL; Gear Shift Type: MTM, 5-SPEED FLOOR SHIFT; Engine: (1HZ) 4200CC DIESEL; Destination: GENERAL COUNTRIES01.2018 - ... View

Engine Cooling Fluid Coupling (Viscous Fan Clutch)

This OEM-grade viscous fan device controls the radiator fan speed so the engine stays in the safe temperature zone. It delivers strong airflow when hot and freewheels when cool, cutting noise and saving fuel. Designed for heavy-duty bus duty, it handles heat, dust, and long idling without complaint.

Why you need it ️

Stable coolant temperature protects the head gasket, turbo, and catalytic parts. Proper fan control gives faster warm-up, better A/C at idle, and reliable towing performance. It is a smart replacement when the fan runs wrong or the engine creeps hot in traffic.

How it works ️

Inside is silicone fluid and a thermostatic bimetal spring. Hot air from the radiator bends the spring, opening a valve. The fluid shear increases, the fan couples to the pulley, and airflow rises. When cooler, the valve closes, slip grows, and the fan spins lighter for quiet, efficient cruising.

What happens if it fails ⚠️

  • Overheating at idle or uphill
  • Constant roaring fan, sluggish power, higher fuel use
  • Silicone oil leak at hub, wobble, or play
  • Weak A/C at stop; temp light flickers

Ignoring failure risks warped head, cracked radiator, and water pump bearing damage. Replacement is bolt-on with basic tools. ❄️

Compatibility

  • Coaster