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CSF 3971 Drive Motor Inverter CoolerOE Quality 60-Day Returns
Part #: 3971

CSF 3971 Drive Motor Inverter Cooler

19 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$134.56Free Shipping
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Free Returns*Wrong fit? No cost
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*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Lexus and Toyota, Grand Highlander, Highlander, RX350h, RX450h+, and Sienna
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
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CSF 3971 Drive Motor Inverter Cooler
BrandCSF
Part Number3971
Core MaterialAluminum
Tank MaterialPlastic
Bottom Hose Fitting (in)3/4 left
Box Height (in)3 7/8
Box Length (in)32 5/8
Box Weight (lbs)3
Box Width (in)8
Core Length (in)26
Core Thickness (in)7/8
Core Width (in)4 1/4
Cross-flow/ Down-flowCross flow
Hazardous MaterialNo
Inlet Length (in)4 13/16
Inlet Width (in)1 3/8
No. Of Rows1
Outlet Length (in)4 13/16
Outlet Width (in)1 3/8
Radiator Cap SuppliedNo
Tech NoteO.e.m. style plastic tank & aluminum core. upgraded with higher p
Top Hose Fitting (in)3/4 right

This part fits 19 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2026ToyotaGrand Highlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2025LexusRX350h2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2025LexusRX450h+2.5LL4PLUG-IN HYBRID EV-GAS (PHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2025ToyotaGrand Highlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2025ToyotaHighlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2025ToyotaSienna2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2024LexusRX350h2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2024LexusRX450h+2.5LL4PLUG-IN HYBRID EV-GAS (PHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2024ToyotaGrand Highlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2024ToyotaHighlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2024ToyotaSienna2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2023LexusRX350h2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2023ToyotaHighlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2023ToyotaSienna2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2022ToyotaHighlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2022ToyotaSienna2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2021ToyotaHighlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2021ToyotaSienna2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design
2020ToyotaHighlander2.5LL4FULL HYBRID EV-GAS (FHEV)N/AUpgraded with Higher Performance & Stronger B-Tube Design

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

13907G9010-48100G9010-48110TO3011109

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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