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Dorman 54218 Coolant Reservoir Cap Compatible with Select Models

Free shipping on orders over $29.99

$13.90

$ 7 .99 $7.99

In Stock

About this item

  • Direct replacement - this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific - made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit - reverse-engineered from the original equipment to fit perfectly
  • Excellent value - a quick, easy replacement that's less expensive than going back to the dealership
  • Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool


Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.


Christian School Teacher
2025-08-08 13:48:50
Perfect fit
SC
2025-07-25 16:10:51
I was chasing a cooling system issue in my parents 2012 Cruze. It had a light coolant leak that I couldn't track. It also had old hoses etc.Every repair I made seemed to move the leak to another place.In the end, after replacing all the coolant hoses and water pump, there was still an issue I couldn't track. So I tried a new reservoir cap.When I installed this cap, I learned two things.The first thing I learned, was that the old reservoir cap was bad.The second thing I learned was that the reservoir tank was weak. It sprung a leak two days after I replaced the cap.So, this cap does work and my parents Cruze basically has a new cooling system as only the radiator and heater core are original now.Hopefully you won't have to replace as many parts as I did.
Don McIntyre
2025-06-17 10:32:18
Worked for coolant pressure tank on 2011 Chevy Cruze
W.D. Texas
2025-05-21 15:27:47
I bought this because I recently learned that all radiator caps lose their seal and pressure after 50,000 miles or so. That can cause problems and you may have a costly repair because the mechanic doesn’t test the cap and instead wants you to do some other (expensive) fix.Just replace this occasionally and keep your system at the right pressure. Good price. Good fit. Worth peace of mind knowing the system is properly pressurized. Keep your cooling system running smoothly. Buy one today!
Terrance
2025-05-16 14:30:42
I wish I read the other one-star reviews. This thing didn't last long at all. After checking my engine coolant levels the top of this thing came off. Now I'll have to find some way to get the other part that's still screwed in my coolant reservoir out...
wayne
2025-05-06 19:43:04
Works
Juan Parra
2025-04-20 14:35:33
As stated, it is a resevoir cap and fit perfectly
btru
2025-03-28 12:02:50
this cap fit perfectly on my silverado.
Lucio D.
2025-03-17 14:13:25
Las especificaciones son correctas ya su desempeño es muy eficiente
IB Customer
2025-03-16 15:15:41
Exact replacement cap for coolant overflow tank, at very reasonable price.
Rene Ruiz
2025-03-05 16:07:48
Compre el tapon despues de revisar que era el correcto para mi vehiculo. pesima calidad, el plastico era malisimo y la porqueria se rompio en dos, la parte de abajo quedo enroscada en en tanque del anticogelante. una verdadera porqueria.
Andrew
2025-01-06 11:28:24
Replace a broken cap on my Silverado. Works perfect. Put a light coating of dielectric grease on the orings before installing.
Bill G.
2024-11-24 14:51:32
Perfect fit, right out of the box.
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