MSDs Deutsch Connectors are sealed and lock together making them perfect for harsh racing applications. The compact housing of the connectors are molded from a durable plastic material that will not harden or crack. Each housing is indexed to prevent any chance of mismatching the ends plus they have a molded channel to secure another connector for a tidy appearance.The terminals grip to the wire with strong crimp tabs then lock into position inside the housing. The connections are protected with thick seals that will keep water, mud and debris away from the contacts. These terminals can handle more current than conventional connectors and do not require special tools. Supplied with terminals, seals and housings. MSD 4-Pin Connector Assembly 8187 Deutsch Connector - 12-14 GaugeSealed and Lock TogetherPerfect For Harsh Racing ConditionsDurable Plastic Housing ConnectorEach Housing Indexed-No MismatchMolded Channel - SecureTerminals-Strong Crimp TabsTerminals Lock Into PositionProtected From Outer DebrisPit Stop USAoffers MSD Ignition 4-Pin Connector Assembly 8187 at low everyday prices. Be sure to check out all of the products from MSD Ignition including MSD Electrical System Parts and Accessories, MSD Electrical Connectors and Plugs.