OEM Toyota 4Runner Radiator Cap

Cooling Radiator Cap

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13 Radiator Caps found

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Toyota 4Runner Radiator Cap
Part Number: 16401-36020
$16.96 MSRP: $23.61
You Save: $6.65 (29%)
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Product Specifications
- Other Name: Cap Sub-Assembly, Radiator; Filler Cap; Water Outlet Cap; Radiator Assembly Cap; Cap; Cap Sub-Assembly, Water Filler
- Manufacturer Note: TYPE C:REFER ILLUST.
- Replaces: 16401-31520, 16401-31792, 16401-62100
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2015-2016, 2001-2002 Toyota 4Runner | Base, Limited, SR5, Trail, TRD Pro | 6 Cyl 3.4 L GAS, 6 Cyl 4.0 L GAS
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Toyota 4Runner Radiator Cap
Part Number: 16401-31650
$18.75 MSRP: $26.10
You Save: $7.35 (29%)
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Product Specifications
- Other Name: Cap Sub-Assembly, Radiator; Cap
- Replaces: 16401-75440, 16401-5B630, 16401-05140
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2010 Toyota 4Runner | Limited, Sport, SR5 | 4 Cyl 2.7 L GAS, 6 Cyl 4.0 L GAS
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Toyota 4Runner Radiator Cap
Part Number: 16401-30020
$14.93 MSRP: $20.78
You Save: $5.85 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap Sub-Assembly, Radiator
- Replaces: 16401-0C050, 16401-46610
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2016 Toyota 4Runner | Limited, SR5, Trail, TRD Pro | 6 Cyl 4.0 L GAS
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Toyota 4Runner Cap Sub-Assembly, Radiator
Part Number: 16401-20353
$14.93 MSRP: $20.78
You Save: $5.85 (29%)
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Product Specifications
- Other Name: Radiator Cap
- Replaces: 16401-20310, 16401-72090
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1996-2000 Toyota 4Runner | Base, Limited, SR5 | 4 Cyl 2.7 L GAS, 6 Cyl 3.4 L GAS
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Toyota 4Runner Cap Assembly
Part Number: 16405-75020
$16.84 MSRP: $23.43
You Save: $6.59 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cap Sub-Assembly, Reservoir; Engine Coolant Reservoir Cap; Radiator Cap; Cap Sub-Assembly, Reserve Tank
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1996-2002 Toyota 4Runner | Base, Limited, SR5 | 4 Cyl 2.7 L GAS, 6 Cyl 3.4 L GAS
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Toyota 4Runner Cap Sub-Assembly, Radiator Reserve Tank
Part Number: 16405-50051
$14.21 MSRP: $19.78
You Save: $5.57 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap Sub-Assembly, Reservoir; Cap Sub-Assembly, Reserve Tank; Radiator Cap
- Replaces: 16405-50050
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2018 Toyota 4Runner | Limited, Sport, SR5, SR5 Premium, Trail, TRD Off-Road, TRD Off-Road Premium, TRD Pro | 4 Cyl 2.7 L GAS, 6 Cyl 4.0 L GAS, 8 Cyl 4.7 L GAS
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Toyota 4Runner Radiator Cap
Part Number: 16401-63010
$21.86 MSRP: $30.43
You Save: $8.57 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap Sub-Assembly, Radiator; Cap; Cap Sub-Assembly(For Water Outlet); Cap Sub-Assembly, Water Filler
- Replaces: 16401-63010-73
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1990-1995 Toyota 4Runner | SR5 | 4 Cyl 2.4 L GAS, 6 Cyl 3.0 L GAS
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Toyota 4Runner Radiator Cap
Part Number: 16401-17010
$15.16 MSRP: $21.10
You Save: $5.94 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap Sub-Assembly, Radiator
- Replaces: 16401-50370, 16401-6A140
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2009 Toyota 4Runner | Limited, Sport, SR5 | 8 Cyl 4.7 L GAS
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Toyota 4Runner Cap Sub-Assembly, Reserve Tank
Part Number: 16405-22040
$12.06 MSRP: $16.78
You Save: $4.72 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap Sub-Assembly, Reservoir
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2019-2023 Toyota 4Runner | 40th Anniversary Edition, Limited, Nightshade, SR5, SR5 Premium, Trail, TRD Off-Road, TRD Off-Road Premium, TRD Pro, TRD Sport, Venture | 6 Cyl 4.0 L GAS
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Toyota 4Runner Radiator Cap
Part Number: 16401-31830
$16.24 MSRP: $22.60
You Save: $6.36 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap Sub-Assembly, Radiator; Filler Cap; Cap
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2023 Toyota 4Runner | 40th Anniversary Edition, Limited, Nightshade, SR5, SR5 Premium, Trail, TRD Off-Road, TRD Off-Road Premium, TRD Pro, TRD Sport, Venture | 6 Cyl 4.0 L GAS
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Toyota 4Runner Cap Assembly
Part Number: 16405-71010
Product Specifications
- Other Name: Cap Sub-Assembly, Reservoir; Radiator Cap; Cap Sub-Assembly, Reserve Tank
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1990-1995 Toyota 4Runner | SR5 | 4 Cyl 2.4 L GAS
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Toyota 4Runner Cap Assembly
Part Number: 16405-35040
Product Specifications
- Other Name: Cap Sub-Assembly, Reservoir; Radiator Cap; Cap Sub-Assembly, Reserve Tank
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1990-1995 Toyota 4Runner | SR5 | 6 Cyl 3.0 L GAS
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Toyota 4Runner Cap Assembly
Part Number: 16405-35010
Product Specifications
- Other Name: Cap Sub-Assembly, Reservoir; Radiator Cap; Cap Sub-Assembly, Reserve Tank
- Manufacturer Note: W(AIR BOX)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1990-1995 Toyota 4Runner | SR5 | 4 Cyl 2.4 L GAS

Toyota 4Runner Radiator Cap

Choose genuine Radiator Cap that pass strict quality control tests. You can trust the top quality and lasting durability. Shopping for OEM Radiator Cap for your Toyota 4Runner? Our website is your one-stop destination. We stock an extensive selection of genuine Toyota 4Runner parts. The price is affordable so you can save more. It only takes minutes to browse and find the exact fit. Easily add to cart and check out fast. Our hassle-free return policy will keep you stress-free. We process orders quickly for swift delivery. Your parts will arrive faster, so you can get back on the road sooner.

Toyota 4Runner Radiator Cap is at the center of an all-wheel SUV that has gained loyalty over the decades, combining the body on frame power with the smoothing ride comfort that turn long highway trips and rocky roads into equally pleasant experience, a fact that testifies to the reliability of Toyota. The 4Runner was designed by its engineers with large ground clearance, flexible transfer case, and roomy cabin to enable the family to explore without compromising on the gear. The constant upgrades have introduced new safety features, but the reliability of the old is still present, and Toyota supports the SUV with easily accessible factory components that ensure that each 4Runner operates well. One such part is the Radiator Cap which is essential, albeit silent. Radiator Cap: this is applied to cover the cooling system, maintain certain pressure to keep the coolant as a liquid under heat conditions, and also to dump excess into the reservoir until the temperatures stabilize, eliminating the potential of a boil over that would otherwise damage the engine. The Toyota Radiator Cap is manufactured to the exact Toyota standards and will resist corrosion and will have the same spring tension over the years of adventurous driving. The procedures are fast and easy when the cap requires to be replaced. Turn off the engine, wrap the old Radiator Cap with cloth, press, twist off, replace the new cap, and start the 4Runner, examine whether leaking or not.