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Motorad
Motorad ST18 Safety Lever Radiator Cap - Vents Pressure Before Removal
$26.99
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SKU: ST18
Categories:
100% ORIGINAL AND QUALITY
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- Description
- Fitment
- Warranty and Refund
- Reviews
The Motorad ST18 Safety Lever Radiator Cap gives you a safer way to service your cooling system. Its integrated safety lever releases built-up pressure before the cap is removed, helping prevent hot coolant surprises during routine maintenance. Manufactured to OEM specifications, this cap is built with proper relief and vacuum valves to maintain consistent system pressure across a 16-20 PSI range, supporting stable engine operating temperatures. The stainless steel, plastic, and rubber construction is designed for an easy, tool-free install and removal, making it a practical swap for a worn or leaking factory cap. Every ST18 is quality tested to hold up under demanding cooling system conditions, and with a documented fit across a wide range of Dodge, Cadillac, Chevrolet, GMC, Pontiac, Mitsubishi, Chrysler, and Eagle vehicles from 1988-2023, it's easy to find the right cap for your application. Keep your radiator sealed and your service routine safer with the ST18.
Features
- Safety lever vents cooling system pressure first, reducing burn risk during cap removal
- 16-20 PSI relief and vacuum valve design supports stable, OEM-matched cooling performance
- Cam-on style plus stainless steel, plastic, and rubber build for durable, easy handling
- Manufactured to OEM specifications for a confident, reliable direct-style replacement
- Quality tested construction designed to perform under demanding automotive cooling conditions
Application Summary
1988-1992 Eagle Premier 3.0L 2972CC 182CID V6 SOHC 12 Valve Naturally Aspirated GAS1991-1992 Dodge Monaco 3.0L 2972CC 182CID V6 SOHC 12 Valve Naturally Aspirated GAS
1993 Jeep Grand Wagoneer 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 Chevrolet Camaro 3.4L -CC 207CID V6 OHV 12 Valve Naturally Aspirated GAS
1993-1995 Pontiac Firebird 3.4L -CC 207CID V6 OHV 12 Valve Naturally Aspirated GAS
1993-1997 Jeep Grand Cherokee 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS
1994-2000 Chevrolet C3500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
1994-2002 Chevrolet C3500HD 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
1995-2002 Chevrolet Camaro 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1995-2002 Pontiac Firebird 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1997, 1999-2003 Jeep Grand Cherokee 4.0L -CC 242CID L6 OHV 12 Valve Naturally Aspirated GAS
1997-2002 Jeep Wrangler 2.5L -CC 150CID L4 OHV 8 Valve Naturally Aspirated GAS
1998 Jeep Grand Cherokee 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS
1999, 2004 Jeep Grand Cherokee 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated GAS
1999-2000 Dodge Ram 3500 Van 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated LPG
2000 Chevrolet C2500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000 Chevrolet K2500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000 Chevrolet K3500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000 Dodge Dakota 3.9L 3906CC 239CID V6 OHV 12 Valve Naturally Aspirated GAS
2000 Dodge Dakota 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated GAS
2000 Dodge Durango 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated GAS
2000 Dodge Durango 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS
2000 Dodge Durango 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS
2000 Dodge Ram 2500 Van 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated LPG
2000 GMC C2500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000 GMC C3500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000 GMC K2500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000 GMC K3500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000-2001 Dodge Dakota 2.5L 2507CC 153CID L4 OHV 8 Valve Naturally Aspirated GAS
2000-2002 Cadillac Eldorado 4.6L -CC 281CID V8 DOHC 32 Valve Naturally Aspirated GAS
2000-2002 Chevrolet Express 2500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000-2002 Chevrolet Express 3500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000-2002 GMC Savana 2500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000-2002 GMC Savana 3500 6.5L -CC 395CID V8 OHV 16 Valve Turbocharged DIESEL
2000-2005 Cadillac DeVille 4.6L -CC 281CID V8 DOHC 32 Valve Naturally Aspirated GAS
2001, 2006 Chrysler Sebring 2.4L 2429CC 148CID L4 DOHC 16 Valve Naturally Aspirated GAS
2001-2002 Oldsmobile Aurora 3.5L -CC 214CID V6 DOHC 24 Valve Naturally Aspirated GAS
2001-2003 Dodge Ram 2500 Van 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated CNG
2001-2003 Dodge Ram 3500 Van 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2003 Oldsmobile Aurora 4.0L -CC 244CID V8 DOHC 32 Valve Naturally Aspirated GAS
2002-2003, 2005 Jeep Liberty 3.7L -CC 226CID V6 SOHC 12 Valve Naturally Aspirated GAS
2002-2005 Chrysler Sebring 2.7L 2736CC 167CID V6 DOHC 24 Valve Naturally Aspirated GAS
2003-2006 Jeep Wrangler 4.0L -CC 242CID L6 OHV 12 Valve Naturally Aspirated GAS
2004 Jeep Liberty 2.4L -CC 148CID L4 DOHC 16 Valve Naturally Aspirated GAS
2004-2005 Dodge Stratus 2.4L 2429CC 148CID L4 DOHC 16 Valve Naturally Aspirated GAS
2004-2005 Pontiac Bonneville 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
2005-2006 Chrysler Cirrus 2.4L 2429CC 148CID L4 DOHC 16 Valve Turbocharged GAS
2005-2006 Pontiac GTO 6.0L 5967CC 364CID V8 OHV 16 Valve Naturally Aspirated GAS
2006 Dodge Stratus 2.7L 2736CC 167CID V6 DOHC 24 Valve Naturally Aspirated GAS
2006 Mitsubishi Raider 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated GAS
2006-2009 Mitsubishi Raider 3.7L -CC 226CID V6 SOHC 12 Valve Naturally Aspirated GAS
2007, 2009-2010 Chrysler Cirrus 2.4L 2360CC 144CID L4 DOHC 16 Valve Naturally Aspirated GAS
2008 Chrysler Pacifica 4.0L 3952CC 241CID V6 SOHC 24 Valve Naturally Aspirated GAS
2008-2010 Chrysler Cirrus 3.5L 3497CC 215CID V6 SOHC 24 Valve Naturally Aspirated GAS
2011, 2016-2018, 2020 Dodge Journey 2.4L 2360CC 144CID L4 DOHC 16 Valve Naturally Aspirated GAS
2011-2017 Dodge Durango 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated FLEX
2011-2020 Dodge Durango 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS
2012 Dodge Dakota 3.7L -CC 226CID V6 SOHC 12 Valve Naturally Aspirated GAS
2012, 2016, 2022 Dodge Charger 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS
2012-2013, 2015-2016, 2018-2019, 2021 Jeep Grand Cherokee 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated FLEX
2012-2013, 2019 Jeep Grand Cherokee 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS
2012-2015, 2019 Dodge Journey 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated FLEX
2014, 2017, 2020 Jeep Grand Cherokee 6.4L 6424CC 392CID V8 OHV 16 Valve Naturally Aspirated GAS
2015, 2017-2018, 2020-2021 Dodge Charger 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated FLEX
2016 Dodge Challenger 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS
2017-2023 Dodge Challenger 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated GAS
2018-2022, 2025 Dodge Durango 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated GAS
2019, 2023 Dodge Charger 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated GAS
Part Numbers: ST18
Specifications
- Brand: Motorad
- Part Number: ST18
- Part Type: Radiator Cap
- UPC: 055644910185
- GTIN: 00055644910185
- Item Dimensions: 3.0000 x 3.0000 x 3.2500 IN
- Package Dimensions: 3.0000 x 3.0000 x 3.2500 IN
- Package Weight: 0.1500 PG
- Package Quantity: 1 EA
- Material: Stainless Steel
- Material: Plastic
- Material: Rubber
- Color: Silver
- Attachment Type: Cam-On
- Width: 2.39
- Width: 60.71
- Type: Standard
- Grade Type: Standard Replacement
Interchange
- CST: 7718
- Parts Master: 17268
- Motorad: ST18
- FVP Caps & Thermostats: ST18
- Murray Temperature Control: 7718
- Pronto: ST18
- Federated: ST18
- Mighty Distributing System: 7718-RC
- Parts Plus: P7718
- Canadian Tire: ST18
- Duralast: 7718
- ACDelco: 12R10S
- Duralast: 7718CS
- Duralast: 7718
- CST: 7718
- Worldparts: 9ST18
- Autopart International: 1678-290984
- Pep Boys: ST18
- Balkamp: 703-1737
- Carquest Premium Caps and Stats: 10334
Warranty
- Warranty Duration: 12 Months
Returns
30-Day Money-Back Guarantee
We want you to be completely satisfied with your purchase! If you are not happy for any reason, you may return the item within 30 days for a refund, minus shipping fees, provided that: The part is brand new, uninstalled, and undamaged in any way.
To initiate a return, please contact us or email support@mizumoauto.com for a Return Authorization Number (RMA) and the return shipping address. Returns without an RMA number will be refused and returned to you at your expense.
Return Requirements:
- Items must be securely packed in the original manufacturer's packaging.
- All original materials must be included, such as hardware, manuals, protective caps, wrapping, and instructions.
- You must obtain and retain the tracking number for your return.
Non-Returnable Items:
- Piston rings, main bearings, and rod bearings are non-returnable if the manufacturer’s seal or shrink-wrapped plastic has been opened. No exceptions—this ensures the integrity of the parts you receive.
We are not responsible for lost or damaged returns. If your return is lost or damaged during shipping, a refund cannot be issued, as the item cannot be resold or returned to the supplier. Please file a claim directly with your shipping carrier for reimbursement.
Refunds are processed within 1-2 business days after we receive and inspect the returned item. Please allow this processing time before inquiring about your refund status.
Warranty
Mizumo Auto provides a 90-day Limited Warranty against defects in workmanship and materials under normal service conditions, effective from the original delivery date.
This warranty is non-transferable and applies only to the original purchaser. Coverage is limited to the replacement or refund of defective products.
Exclusions:
The warranty does not cover labor costs, damage resulting from accidents, misuse, alterations, or unauthorized modifications, as well as additional expenses such as towing, fluids, oils, car rentals, and any other parts not included in the original purchase.
Warranty Claims Process:
- All warranty claims must be pre-authorized and returned prepaid to Mizumo Auto for inspection and approval.
- No exchanges will be made for products that have been damaged, misused, or improperly installed. We strongly recommend professional installation.
- The buyer assumes all risk of damage resulting from improper installation.
All disputes related to transactions shall be resolved by a court of competent jurisdiction in Los Angeles County, California.
Shipping
We offer Free UPS Ground or USPS Ground Advantage shipping within the continental U.S. (48 states).
Shipping to Other Locations:
A delivery surcharge applies to shipments to: Alaska, Hawaii, Puerto Rico, U.S. territories, APO/FPO addresses, Canada, and international destinations.
Order Processing & Tracking:
- Orders are shipped Monday through Friday, excluding holidays.
- Orders placed before 3:00 PM PST will ship the same day, unless unexpected delays occur.
- A tracking number will be emailed within one business day after shipping.
If you do not receive a tracking number, please:
- Check your spam/junk folder.
- If it's not there, contact us via phone or eBay message for assistance.
International Orders:
Import duties, taxes, and brokerage fees are not included in the shipping fee. Please check with your shipping carrier and local customs office regarding any applicable fees before placing your order.