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Motorad® 3121 Radiator Cap Adapter

Manufacturer #3121

Motorad® 3121 Radiator Cap Adapter

Manufacturer #3121

$13.25

~~$18.55~~

Save $5.30 (29%)

(18) In Stock

Get it between Wed, Aug 20 - Fri, Aug 22, 2025

E.P.A. Compliant Converters are not legal for sale or use in California or Colorado. Restrictions apply in New York and Maine.

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SKU	TZ3121
Brand	Motorad®
Part Name	Radiator Cap Adapter
Part	# 3121
Quantity Per Vehicle	1
Pack of	1
Condition	New

+ Acura
+ Alfa Romeo
+ Asuna
+ Chevrolet
+ Chrysler
+ Daihatsu
+ Datsun
+ Dodge
+ Eagle
+ Faw
+ Ford
+ Geo
+ Gmc
+ Honda
+ Hyundai
+ Infiniti
+ Isuzu
+ Kia
+ Lexus
+ Lincoln
+ Mazda
+ Mercury
+ Merkur
+ Mitsubishi
+ Nissan
+ Plymouth
+ Pontiac
+ Renault
+ Subaru
+ Suzuki
+ Toyota

Radiator Cap Tester Adapter
Professional quality
Works with MT-300 pressure tester
Machined metal construction
Tests coolant caps
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.

Prop 65	Warning: cancer and reproductive harm - www.p65warnings.ca.gov
Color	Black
Fittings Included	No
End 1 Inside Diameter	1.65 in
End 2 Outside Diameter	1.67 in
End 1 Outside Diameter	2.23 in
Material	Plastic
Gasket Or Seal Included	No
Seal Quantity	0
Attachment Type	Twist on
End 1 Outside Diameter (IN)	2.23
End 2 Inside Diameter (IN)	1.26
Height (IN)	2.95

Shipping Policy

We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.

Return Policy

We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund.

Warranty Policy

Right parts, guaranteed. If you find any defects, simply notify us within the warranty period, and we’ll take care of it. Check out our Warranty Policy for more details.