Genuine Lexus RX500h Radiator Cap

Cooling Radiator Cap

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4 Radiator Caps found

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Lexus RX500h Cap, Reserve Tank
Part Number: 16475-28140
$25.27 MSRP: $32.58
You Save: $7.31 (23%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Cap, Reservoir Cap, Reservoir Tank Cap
- Replaces: 16475-37010, 16475-51010, 16475-37011, 16475-28120, 16401-53010, 16401-75120
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX500h | 4 Cyl 2.4L, 4 Cyl 2.5L | A25AFXS, T24AFTS; AALH15L-AWXGBA, AALH15L-CWXGBA, AALH16L-AWXGBA, TALA10L-AWZGTA, TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-AWTGTA, TALH17L-CWTGTA
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Lexus RX500h Cap Sub-Assy, Radiator
Part Number: 16401-36030
$18.43 MSRP: $23.77
You Save: $5.34 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap Sub-Assembly, RADIAT; Filler Cap, Radiator Cap
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX500h | 4 Cyl 2.4L, 4 Cyl 2.5L | A25AFXS, T24AFTS; AALH15L-AWXGBA, AALH15L-CWXGBA, AALH16L-AWXGBA, TALA10L-AWZGTA, TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-AWTGTA, TALH17L-CWTGTA
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Lexus RX500h Cap, Radiator Reserve
Part Number: 16471-23010
$2.85 MSRP: $3.64
You Save: $0.79 (22%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap, Radiator RESERV
- Replaced by: 16471-0D010
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX500h | 4 Cyl 2.4L, 4 Cyl 2.5L | A25AFXS, T24AFTS; AALH15L-AWXGBA, AALH16L-AWXGBA, TALA10L-AWZGTA, TALH17L-AWTGTA
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Lexus RX500h CAP SUB-ASSY, RESERV
Part Number: 16405-F0030
$5.53 MSRP: $7.14
You Save: $1.61 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cap, Reservoir Cap
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX500h | 4 Cyl 2.4L, 4 Cyl 2.5L | A25AFXS, T24AFTS; AALH15L-CWXGBA, TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-CWTGTA

Lexus RX500h Radiator Cap

The Lexus RX500h Radiator Cap is the gatekeeper of the cooling system and maintains the exact amount of pressure to keep temperature spikes in check. Built with a hardy steel spring and rubber gasket, this Radiator Cap contains coolant at about 16 PSI, venting excess to the reservoir, then sucking it back as temperatures drop, raising the boiling point and preventing air pockets. Because all RX500h in the current and previous production run have the same single-stage Radiator Cap, drivers enjoy seamless compatibility if they fly a brand new crossover or a well-traveled model; there's no guesswork at service time. Its reliable design protects hoses, pump bearings, and head gaskets from pressure swings, both to protect the system and to help the hybrid powertrain provide punchy acceleration and smart fuel economy. Owners of the Lexus RX500h love the fact that a simple visual check of the Radiator Cap will show any cracked seal or tired spring and allow them to take action in time to prevent costly overheating episodes. The Radiator Cap's corrosion-resistant finish and precise vent valve calibration give it an advantage over its rivals when it comes to avoiding long-term leaks. By locking in optimum pressure, the Radiator Cap allows the turbocharged engine and high output motor to maintain constant temperature and support cleaner combustion, greater battery assistance, and smoother shifting from the six-speed automatic. Regular factory testing backs up the Lexus promise, with the Radiator Cap having been tested to cycle thousands of times without any pressure drift, a statistic that reassures RX500h owners planning to take long road trips. Should a Lexus driver take on steep mountain passes or scorch through city traffic, the Radiator Cap still protects each RX500h engine bay, maintaining efficiency when coolant temperatures rise. Such everlasting dependability is indicative of the broader Lexus philosophy of engineering every last detail for endurance.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus RX500h Radiator Cap available on LexusPartsNow.com. Our OEM Lexus RX500h Radiator Cap come with the reassurance of the manufacturer's warranty, a hassle-free return policy, and speedy delivery service, all at affordable prices online. Feel free to shop with confidence!