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Subaru Radiators

Radiators help keep engines cool by circulating coolant through the engine and releasing heat. Over time, radiators face wear and tear that can reduce their ability to cool effectively. SubaruFactoryPartsOnline.com stresses the importance of using genuine Subaru radiators because they offer reliable fit and durability compared to cheaper aftermarket options. Models like the Subaru Crosstrek and Subaru WRX depend on quality cooling systems to perform well.

Why radiators break down

Radiators can develop leaks, corrosion, or clogging as they age. Coolant can leave deposits inside, blocking flow and causing overheating. Cheaper aftermarket radiators may use lower-grade materials that corrode faster or don’t fit perfectly, leading to leaks. Genuine Subaru radiators resist corrosion better and maintain proper cooling for longer.

When to replace the radiator

Signs of a failing radiator include engine overheating, coolant leaks, or unusual temperature gauge readings. SubaruFactoryPartsOnline.com recommends checking the radiator during routine maintenance and replacing it when leaks or blockages occur. Staying on schedule prevents engine damage and keeps the vehicle running smoothly.

Supporting parts to check along with the radiator

The water pump works closely with the radiator to circulate coolant. Using genuine Subaru parts for both helps avoid premature failure and ensures efficient engine cooling.

Choosing genuine Subaru radiators helps maintain consistent engine temperature and prevents costly repairs. Cheaper alternatives often fail sooner and may cause additional engine problems. SubaruFactoryPartsOnline.com offers parts built specifically for models like the Crosstrek and WRX. Regular radiator maintenance helps extend your vehicle’s lifespan and keeps performance steady.

Side Panel

Part Number: 53029FL1409P
Subaru Subaru
Notes: Included with radiator support.
Other Names: Panel Complete Radiator Side Left-hand
Description: Without hybrid.
Fits:
  • Subaru:
    • Crosstrek
MSRP $74.17
$51.62

Plug

Part Number: 45124AC000
Subaru Subaru
Notes: Part has related components that cannot be reused/reinstalled. o-ring. included with radiator assembly.
Other Names: Drain Plug, Radiator Assembly Drain Plug, Cap Plug, Radiator Drain Plug, Air Plug
Description: 2.5L turbo. 2.0L.
Fits:
  • Subaru:
    • Baja,
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • WRX,
    • WRX STI,
    • XV Crosstrek
MSRP $10.88
$8.68

Sight Shield

Part Number: 91165SL000
Subaru Subaru
Other Names: Radiator Support Access Cover, Bracket Grille F
Fits:
  • Subaru:
    • Forester
MSRP $45.38
$31.59

Lower Tie Bar

Part Number: 53029FG0309P
Subaru Subaru
Notes: Included with radiator support.
Other Names: Lower Reinforced, Frame CP Radiator Panel Lower
Fits:
  • Subaru:
    • Forester,
    • Impreza
MSRP $80.68
$56.16

Reservoir Assembly

Part Number: 45150AG011
Subaru Subaru
Notes: Includes Reservoir Cap. Includes Expansion Tank Cap.
Applications: 2.5L.
Other Names: Expansion Tank, Reservoir, Reserve Tank Ay Radiator
Description: With turbo. 2.5L turbo. Forester. Impreza.
Fits:
  • Subaru:
    • Forester,
    • Impreza
MSRP $70.38
$48.99

Reservoir Assembly

Part Number: 45150SA000
Subaru Subaru
Other Names: Engine Coolant Reservoir, Reserve Tank Ay Radiator
Description: 2.5L 2006-08. 2.5L 2003-05.
Fits:
  • Subaru:
    • Forester
MSRP $83.15
$57.87

Drain Plug O-Ring

Part Number: 45167TC000
Subaru Subaru
Notes: Included with radiator assembly.
Other Names: Radiator Assembly O-Ring, Packing(O Ring)
Description: 2.5L. 3.6L. 3.0L. 2.0L hybrid.
Fits:
  • Subaru:
    • Ascent,
    • BRZ,
    • Crosstrek,
    • Legacy,
    • Outback
MSRP $3.35
$2.79

Air Guide

Part Number: 45115FN00A
Subaru Subaru
Other Names: Radiator Support Air Deflector, Air Guide Upper
Description: 2.5L. lower.
Fits:
  • Subaru:
    • Crosstrek
MSRP $45.27
$31.51

Under Cover

Part Number: 56410SA070
Subaru Subaru
Other Names: Radiator Support Splash Shield, Under Cover Front
Replaces: 56410SA000, 56410SA030
Description: Without XT. Without turbo.
Fits:
  • Subaru:
    • Forester
MSRP $183.07
$123.57

Cap

Part Number: 45137FE002
Subaru Subaru
Notes: Included with water pipe. Included with cross over pipe. Included with radiator assembly.
Applications: 2.5L. 2.0L.
Other Names: Radiator Cap, Filler Cap, Engine Coolant Reservoir Cap, Engine Coolant Filler Neck Cap, Cap Ay Radiator
Replaces: 45137FE000, 45137FE001
Description: WRX STI. Location-Radiator. Impreza. 2.0L hybrid. Forester. With turbo, WRX. At water pipe. 2.5L upper. Baja. Crosstrek.
Fits:
  • Subaru:
    • Baja,
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • WRX STI
MSRP $24.37
$17.69

Lower Tie Bar

Part Number: 53029SJ0709P
Subaru Subaru
Notes: Included with radiator support.
Other Names: Radiator Support Tie Bar, Rad Panel Complete Lower
Fits:
  • Subaru:
    • Forester
MSRP $80.72
$56.18

Air Guide

Part Number: 45115FN02A
Subaru Subaru
Other Names: Radiator Support Air Deflector, Air Guide Right-hand
Description: 2.5L. side.
Fits:
  • Subaru:
    • Crosstrek
MSRP $16.50
$13.17

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