Availability
Radiator Caps
The radiator cap is a small but important component of your vehicle’s cooling system. When functioning properly, the cap keeps contaminates and excess air out of your...
The radiator cap is a small but important component of your vehicle’s cooling system. When functioning properly, the cap keeps contaminates and excess air out of your cooling system. Excess air in the system reduces cooling efficiency and can lead to problems like engine overheating.
Most radiator caps for modern applications are designed to let a specified amount of pressure build in the system as the coolant heats up and expands. If the system’s pressure exceeds the specified radiator cap pressure, a valve in the cap opens to let coolant flow into the coolant reservoir. As the coolant temperature decreases and the system...
The radiator cap is a small but important component of your vehicle’s cooling system. When functioning properly, the cap keeps contaminates and excess air out of your cooling system. Excess air in the system reduces cooling efficiency and can lead to problems like engine overheating.
Most radiator caps for modern applications are designed to let a specified amount of pressure build in the system as the coolant heats up and expands. If the system’s pressure exceeds the specified radiator cap pressure, a valve in the cap opens to let coolant flow into the coolant reservoir. As the coolant temperature decreases and the system pressure drops, the cap allows the coolant to return to the main cooling system. For added safety, some caps come equipped with pressure-release levers to vent excess pressure before the cap is removed.
If you’re experiencing cooling problems, you may want to start with a new radiator cap. We have you covered with a wide selection of stock replacement radiator caps for just about anything you drive. We also carry radiator caps with built-in temperature gauges so you know just what’s happening inside your cooling system. When it’s time to upgrade to an aftermarket aluminum radiator, top it off with a billet aluminum radiator cap in a variety of eye-catching finishes such as natural, chrome, polished, and anodized colors to complement your engine bay.
You can shop radiator caps with pressure ratings from 0 to 42 psi in a variety of styles from trusted brands like Stant, Moroso, Be Cool, Meziere, and more. And remember, everything we sell is backed by the best customer service in the industry.
Showing In Stock Items. Show All 47 Items.
Radiator Cap, Aluminum, Polished, Round, 16 psi, Each
Part Number: BSP-75120
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Notch Grip, Round, 16 psi Maximum Pressure, Aluminum, Black Anodized, Each
Part Number: BSP-BLK75125
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Billet Aluminum, Black Anodized, Round, Plain, 16 psi, Each
Part Number: BSP-BLK75120
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Notch Grip, Round, 16 psi Maximum Pressure, Aluminum, Polished, Each
Part Number: BSP-75125
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Aluminum, Polished, Round, Bowtie Emblem, 16 psi, Each
Part Number: BSP-75320
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Aluminum, Polished, Round, 7 psi, Each
Part Number: BSP-76120
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Aluminum, Polished, Round, V8 Logo, 16 psi, Each
Part Number: BSP-75420
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Aluminum, Black Anodized, Round, 13 psi, Each
Part Number: PRO-141-820
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Aluminum, Polished, Round, V8 Logo, 7 psi, Each
Part Number: BSP-76420
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Aluminum, Polished, Round, Bowtie Emblem, 7 psi, Each
Part Number: BSP-76320
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Aluminum, Polished, Round, Circle Logo, 16 psi, Each
Part Number: BSP-75220
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Notch Grip, Round, 18 psi Maximum Pressure, Aluminum, Black Powder Coat
Part Number: CHH-3300-007B
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Radiator Cap, Round, 16 psi Maximum Pressure, Billet Aluminum, Black, Flex-A-Lite Logo, Buick, Cadillac, Chevy, Chrysler, Ford, GMC, Volkswagen, Each
Part Number: FLX-126844
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Round, 16 psi Maximum Pressure, Billet Aluminum, Black, Flex-A-Lite Logo, for use on Acura®, BMW, Chevy, Chrysler, Ford, GMC, Saab, Each
Part Number: FLX-126845
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
RADIATOR CAP
Part Number: FLX-126846
Not Yet Reviewed
Estimated Ship Date: Mar 31, 2026 if ordered today
Estimated Ship Date: Mar 31, 2026 if ordered today
Radiator Cap; Billet Radiator Cap; 16 psi; Knurled Edge; Polished Top; Aluminum
Part Number: CTR-81-116
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Safecap, Billet Aluminum, Black Anodized, 25 psi, Each
Part Number: MEZ-WCC307
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Safecap, Billet Aluminum, Black Anodized, Round, 16 psi, Each
Part Number: MEZ-WCC301
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Safecap, Billet Aluminum, Clear Anodized, Round, 16 psi, Each
Part Number: MEZ-WCC300
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Octagon, Billet Aluminum, Natural, 16 psi, Each
Part Number: AAF-ALL30139
Estimated Ship Date: Today
Estimated Ship Date: Today
COOLANT CAP BILLET SCALLOPED STYLE 16 PSI
Part Number: CTR-81-216
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Safecap, Billet Aluminum, Clear Anodized, 25 psi, Each
Part Number: MEZ-WCC306
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, High-Pressure, Round, 22 to 24 psi, Billet Aluminum, Polished, Each
Part Number: CIR-50-10002
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Radiator Cap, Safecap, Billet Aluminum, Black Anodized, 7 psi, Each
Part Number: MEZ-WCC304
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
BILLET ALUMINUM LOW PROFILE RADIATOR CAP FOR PART NO. 6968316PSI
Part Number: PRO-69522
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
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