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Advance Auto Parts Logo
1205 E Main St
Columbus, OH 43205
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Product Information

Product Details
Part No. 10242
Warranty Details (1 YR REPLACEMENT IF DEFECTIVE)
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today's vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
Specifications
Cap Depth:
0.85 in

Lever Type:
No

Material:
Metal, Rubber

Quick Pressure Release:
No

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4.13 out of 5
141 Customer Reviews
55% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
90
4 Stars
18
3 Stars
11
2 Stars
5
1 Star
17
Not as pictured.
Pros
17
Easy To Install
7
Durable
5
Improves Engine Efficiency
4
Lightweight
1
Increases Power
Cons
1
Cheap Feel
1
Difficult To Install
1
Only Last 2 Years
1
Doesn't Say Stant At All
1
Flimsy
Best Uses
13
Replacement
12
Everyday Driving
2
Restoration
Car & Truck
3
Casual Driver
1
Auto Enthusiast
Describe Yourself
12
Auto Enthusiast
9
Casual Driver
5
Mechanic
2
Truck Enthusiast
1
Competitive Driver
Most Liked Positive Review
Replacement Radiator Cap Stant
Purchased the recommended radiator cap for a replacement radiator (Ready-Rad) for a 94 Integra. Other reviews stated the cap did not fit properly. I dont know what model number was used in this particular case, but the cap I received was a perfect fit. Upon searching the Advance site for a replacement radiator, the compatible cap was listed. Both radiator and cap were ordered and recieved in a timely manner. Free shipping is a huge plus along with the online discounts offered by Advance. Upon a replacement of the radiator and a flush and fill the new cap was installed. The cap is a little light weight in construction but fits fine.
Most Liked Negative Review
Not as pictured.
The picture shows Stant 10242 radiator cap, but actual product sold in store is different. Carquest 10242 I purchased was "non-vented" type while Stant 10242 is "vented" type. Non-vented type is technically also vented, but has spring loaded vent valve and stays closed unless vacuum occurs (as coolant cools). Vented type has a loose vent valve which closed under pressure. Non-vented radiator cap will fit and work on radiator that came with vented radiator cap, but it is best to use same type of part the manufacturer used. Both Toyota and Honda uses vented type. Returned this cap and purchased Stant 10242 elsewhere. Build quality of this cap seems slightly better than Stant.
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Displaying Reviews 1 - 5Back to Top

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Picture looks different .. depth wise. Have a 02 Galant . 2.4l. Mine needs the inner part of cap to be about dime size. Can ya verify this? Or is this a random pic that is used above? Thanks. Had nothing but issues since AZ Sold me a cap w pressure relief valve. And the psi was 16. This says 18. ?? So confused.thanks
Verified Reply - Solomon
Hi Jax, I'm glad to help you! This CARQUEST Radiator Cap (Part #10242) is an exact fit for your 2002 Mitsubishi Galant. Its psi is 16. Please note that the image of the product shown on our website may differ from actual product appearance.
Will this cap allow the antifreeze to be sucked back into the radiator from the zero pressure overflow tank.
Verified Reply - Steve
Hi Speed Racer, glad to assist you! The car's radiator acts as a heat exchanger, transferring excess heat from the engine's coolant fluid into the air. The radiator is composed of tubes that carry the coolant fluid, a protective cap that's actually a pressure valve and a tank on each side to catch the coolant fluid overflow. In addition, the tubes carrying the coolant fluid usually contain a turbulator, which agitates the fluid inside. This way, the coolant fluid is mixed together, cooling all the fluid evenly, and not just cooling the fluid that touches the sides of the tubes. By creating turbulence inside the tubes, the fluid can be used more effectively. When coolant fluid overheats, it expands, causing the fluid to become highly pressurized. When it enters the radiator, the pressure increases even more because it's in an enclosed space. The radiator cap acts as a release valve set to open at the maximum pressure point. Usually this is set at a density of 15 pounds per square inch (psi). When the fluid pressure inside the radiator exceeds 15 psi, it forces the valve open, allowing heat to escape and excess coolant fluid to overflow into the tanks on either side of the radiator. Once the radiator cools down, the coolant fluid in the overflow tanks gets sucked back into the pump, continuing its route through the cooling system.
Would a defective radiator cap cause poor cabin heat in a 2003 chevy tracker.
Verified Reply - Vincent
With reference to your inquiry on the Stant Radiator Cap - part# 10242, a defective radiator cap can cause poor cabin heat in a 2003 Chevy Tracker. However, I would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not (solve/be) the problem. For any further assistance, you may also call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.
HOW MANY LBS?
Open Reply - Steve
The weight of this Stant Radiator Cap - Part No. 10242 is 23 Grams.
Can this or any other cap cause the engine to overheat and lose coolant?
Open Reply - Vincent
Yes, if the radiator cap has been worn out or lost, it can cause the engine to overheat and lose coolant.
Open Reply - HP
yes readiator sysrems are pressurized to help raise the pressure and maintain the temp. If it is weak it will force the fluid out.

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