Best automotive replacement radiator caps according to redditors

We found 5 Reddit comments discussing the best automotive replacement radiator caps. We ranked the 5 resulting products by number of redditors who mentioned them. Here are the top 20.

1. Outlaw Racing High-Pressure Motorcycle Dirtbike Atv Utv Radiator Cap 1.6 – Raise Boiling Point By 25 Degrees – Reduce Coolant Boiling – Fits 2 Stroke And 4 Stroke Bikes – EXCeeds OEM Cap – Stylish

1 mention
Outlaw Racing High-Pressure Motorcycle Dirtbike Atv Utv Radiator Cap 1.6 – Raise Boiling Point By 25 Degrees – Reduce Coolant Boiling – Fits 2 Stroke And 4 Stroke Bikes – EXCeeds OEM Cap – Stylish
✅ While most OEM caps have 1.1 pressure rating, that equal to 15.7 psi of pressure, our cap is at 1.6 and equals approx. 22.8 psi pressure.✅ Outlaw Racing cap will raise your boiling point temperature by 25+ degrees while keeping your coolant from overflowing and maintaining the radiator heat at...
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2. Genuine Toyota (16401-63010) Radiator Cap Sub-Assembly

1 mention
Genuine Toyota (16401-63010) Radiator Cap Sub-Assembly
OEM productFit Type: Vehicle SpecificPackage Weight: 0.022 poundsMade in China
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3. OEMTOOLS 27065 Radiator and Cap Test Kit | Tests Pressure Caps & Coolant Systems for Leaks | Useful Radiator Repair Tool | Works with Most Common Sizes of Coolant Systems | Easy to Use

1 mention
OEMTOOLS 27065 Radiator and Cap Test Kit | Tests Pressure Caps & Coolant Systems for Leaks | Useful Radiator Repair Tool | Works with Most Common Sizes of Coolant Systems | Easy to Use
Chrome Plated Pressure Pump for Corrosion ResistanceIncludes 3 Popular Radiator Adapters and 1 Cap AdapterCap Has a Rotating Lever for Fine Pressure Adjustment and Safe Pressure ReleaseComes in a Sturdy Blow Mold Case
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4. Motorcraft RS-527 Radiator Pressure Cap

1 mention
Motorcraft RS-527 Radiator Pressure Cap
2011-13 Ford...2009-13 Ford...2011-13 Ford...2011-13 Ford...2010-13 Ford...
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5. Safety Radiator Cap, 16 psi, Metal

1 mention
Safety Radiator Cap, 16 psi, Metal
Auto & Truck MaintenanceCountry of manufacture: MexicoManufacturer: STANT
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Subcategories:

Automotive radiator safety products
Automotive radiator caps & kits

Top Reddit comments about Automotive Replacement Radiator Caps:

u/ShuRugal · 14 pointsr/Justrolledintotheshop

>And there isn't much to check. Unless the radiator cap is visibly damaged or broken, you won't know if it will actually vent at the correct pressure.

https://www.amazon.com/OEMTOOLS-27065-Radiator-Cap-Test/dp/B004FDL1TW

u/SonicShadow · 2 pointsr/mr2

The Toyota part number is 16401-63010 for a MK2, I think it's the same for a MK1 though.

EDIT: Just checked, it's the same - http://toyota-europe.epc-data.com/mr2/aw11r/2671/engine/1603/16520A/

You can even order it on Amazon: http://www.amazon.com/Genuine-Toyota-16401-63010-Radiator-Sub-Assembly/dp/B00GD313P4

u/Stivo887 · 2 pointsr/motorcycles

I have this one on my k7.
http://www.amazon.com/Outlaw-Racing-High-Pressure-Radiator/dp/B00T84GZDA/ref=sr_1_fkmr0_2?ie=UTF8&qid=1426972581&sr=8-2-fkmr0&keywords=Outlaw+racing+coolant+cap+gsxr

Came with my bike used.

u/dirtybike24 · 1 pointr/fbody

Got it. I'm talking about a pressure RELIEF cap. I've got the Stant. These have a lever that allows you to release the pressure prior to opening. Of course you can open factory caps when hot... if you like playing the crack, close, crack, close game, risking leopard burn spots on arms and legs, etc.

This is the style I have. I didn't look at the part number for this one, so don't buy without looking up.
https://www.amazon.com/Stant-10331-Lev-R-Vent-Radiator-Cap/dp/B000B8LKZ0

u/DamnGoodDog · 1 pointr/fordranger

you might want a new cap. Ford changed the reservoir cap spring design because the old one would drop from 16psi to usually in a lot of cases 13psi and that lower pressure caused big problems for some folks. New caps are normal for maintenance and I bought this one recently to replace my 14 year old one:http://www.amazon.com/Motorcraft-RS-527-Radiator-Pressure-Cap/dp/B0034RKNPS?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00