🚗 Keep your engine cool with Toyota’s precision power cap!
The Genuine Toyota Radiator Cap (16401-31650) is a high-quality, OEM-certified replacement part designed for cars and trucks. Featuring a durable metal construction with a machined finish and a secure twist-on closure, it ensures an exact fit and reliable engine cooling performance. Lightweight and built to Toyota’s rigorous standards, this radiator cap guarantees long-lasting durability and peace of mind on the road.
| Brand | Toyota |
| Color | Regular |
| Material | Metal |
| Exterior Finish | Machined |
| Vehicle Service Type | Car, Truck |
| Style | Modern |
| Closure Type | Twist-On |
| OEM Part Number | 16401-31650 |
| Manufacturer | Toyota |
| Model | Radiator Cap |
| Item Weight | 1.06 ounces |
| Package Dimensions | 2.52 x 1.93 x 0.91 inches |
| Item model number | 16401-31650 |
| Manufacturer Part Number | 16401-31650 |
A**
OEM is always the best route to go.
I bought a good brand name aftermarket cap, but its ability to hold under high pressure when hot is not adequate and resulting in steam coming out slowly over time and needing coolant refill. This OEM cap fixed it for good! Trying to save some bucks early on and ended up spending more on my Tacoma. OEM is the way to go!
R**.
OEM product
Genuine Toyota products, fit perfectly.
D**W
Perfect OEM replacement.
Ordered on Amazon but then ended up going to the Toyota dealer the same day. The OEM is on the left and the one from Amazon is on the right. Both look identical including the package. Dealer cost was $28. This fits my 2008 4Runner with the V6.
R**.
Perfect fit
My truck kept over heating and I notice my coolant kept dumping from my system. I thought maybe I had a faulty thermostat or my water pump was bad. I replaced both but to no avail. Someone recommended I change my cap so I tried it and it worked like a charm. No more overheating. I prefer using oem parts and this appeared identical to my old one.
A**R
07 Tacoma
Looks good and worked well for a 2.7 2007 Tacoma.
G**Z
Exelente
Excelente producto exactamente igual a la original
A**R
Original part
Fits perfect!
E**.
If you have a Toyota, spent the $$ and get the real Toyota cap.
The spring rates in the other brands are not perfect and your radiator will purge into the overflow at the wrong temp. Then the cap won't allow the radiator to draw back coolant from the overflow. These toyota caps work exactly as they are supposed to
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