Safety Lever Rad Cap
$9.67
BFNG
Part # ST37
4.7(47 reviews)Safety Lever Rad Cap
Fits Acura, Mitsubishi, Lexus & more — 1,506 vehicle applications
$23.11
Only 8 left in stock
1
Express Checkout
Free ShippingOrders $99+
WarrantyManufacturer backed
Easy Returns30-day policy
Canadian OwnedShipped across Canada
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Select your vehicle to check fitment.
BFNG ST37 Vehicle Fitment
Fits 1,506 vehiclesThis Safety Lever Rad Cap fits Acura, Mitsubishi, Lexus, Honda and 7 more makes vehicles.
2007-2011 Lexus GS450h
2007-2010 Lexus GS350
2006-2010 Lexus IS250
2006-2010 Lexus IS350
2003-2005 Lexus GX470
2002-2005 Lexus SC430
2001-2006 Lexus GS430
2001-2006 Lexus LS430
2001-2005 Lexus IS300
1999-2006 Lexus GS300
BFNG ST37 Specifications
- Prop 65
- WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
- Prop 65
- ADVERTENCIA: Riesgo de cáncer y daños reproductivos - www.p65warnings.ca.gov
- SAE Pressure Range
- 14-18 PSI
- Material
- Stainless Steel
- Material
- Plastic
- Material
- Rubber
BFNG ST37 Interchange Numbers
This part replaces and is compatible with the following part numbers
Interchange Numbers
773717238ST37ST3777377737ST37ST37P7737ST37773712R07773777379ST371678-290987ST37NI703-1813ST37
BFNG ST37 Product Description
Safely remove your radiator cap by venting the pressure from the cooling system before removing the cap. Manufactured to meet all OEM specifications. Designed to be easy to install and remove. Manufactured from high quality components with proper relief and vacuum valves. Quality tested to stand up to even the most demanding automotive cooling systems.
Key Features
- Meets all OEM specifications
- 100% tested to ensure proper pressure and longevity
- Safety lever to vent coolant pressure before removal
- Easy installation and removal
- Maintains proper cooling system pressure
Safely remove your radiator cap by venting the pressure from the cooling system before removing the cap. Manufactured to meet all OEM specifications. Designed to be easy to install and remove. Manufactured from high quality components with proper relief and vacuum valves. Quality tested to stand up to even the most demanding automotive cooling systems.
About BFNG
Shop BFNG Radiator Cap at Autrex with vehicle fitment details, current pricing, and checkout options for the BFNG ST37. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Ratings & Reviews
4.7out of 5
Based on 47 reviews
- 538
- 46
- 31
- 21
- 11
- Direct fit, no surprisesMarc D.Verified BuyerMay 28, 2026
Lined up perfectly with the original. Install took about an hour with the right press. Solid feel back in the steering, no more clunk over bumps.
Installed on 2016 Ram 1500
- Shipped fast across CanadaJen P.Verified BuyerMay 14, 2026
Ordered on a Monday, had it by Wednesday in Calgary. Greasable fitting is a nice touch. Quality looks on par with OEM.
Installed on 2014 Chevrolet Silverado 1500
- Good part, double-check your sideSteve R.Verified BuyerApr 30, 2026
Works great so far. Just confirm fitment for your exact trim before ordering — the fitment list on the page was accurate for mine.
Installed on 2017 Ford F-150
- Quiet againAmrit S.Verified BuyerApr 19, 2026
Replaced both sides at the same time. The knocking noise is completely gone. Boot quality feels durable.
Installed on 2015 GMC Sierra 1500
- Would buy againDaniel L.Mar 22, 2026
Second one I've bought from Autrex. Packaging was secure and the part matched the photos exactly.
Installed on 2013 Dodge Durango
Frequently Asked Questions — BFNG ST37
What vehicles does the BFNG ST37 fit?
The BFNG ST37 fits 50 vehicle applications including 2001-2026 Acura MDX, 2010-2015 Mitsubishi L200, 2015 Mitsubishi Mirage, 2007-2011 Lexus GS450h, 2006-2010 Lexus IS250 and 45 more. Check the full fitment list above to confirm your vehicle.
What parts does the BFNG ST37 replace?
The BFNG ST37 is a direct replacement for 7737, 17238, ST37, ST37, 7737 and 15 other part numbers. See the full interchange list for all compatible replacements.
What are the shipping options for the BFNG ST37?
Shipping options for the BFNG ST37 are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
How much does the BFNG ST37 cost?
The BFNG ST37 is currently listed at $23.11 CAD at Autrex. Final price, shipping, taxes, and availability are confirmed during checkout. Call 1-866-461-2787 if you need help before ordering.
Is the Safety Lever Rad Cap a direct fit replacement?
Yes, the Safety Lever Rad Cap by BFNG is designed as a direct fit replacement. Use our vehicle selector to confirm compatibility with your specific vehicle.
What warranty does the Safety Lever Rad Cap come with?
The Safety Lever Rad Cap comes with the standard BFNG manufacturer warranty. Please check the product specifications for exact warranty terms.
