Sierra 18-5275 Marine Tune Up Kit for Prestolite Single Point V-8 Distributors, Screw Cap

The Sierra 18-5275 Marine Tune Up Kit is built for Prestolite single-point, screw-cap V-8 distributors used on marine inboard and sterndrive engines. It is designed as a complete ignition service kit, bringing together the components needed to restore proper spark timing, contact point operation, and distributor cap sealing in one purchase, rather than sourcing individual ignition parts separately.

This kit is engineered for the harsh marine environment, where heat, vibration, and moisture accelerate wear on ignition contact points and distributor components more than they do in automotive use. Sierra manufactures the kit to meet or exceed the specifications of the original equipment components it replaces, and it is intended for the Prestolite single-point distributor with a screw-on cap configuration, as fitted to certain 8-cylinder 305, 350, and 454 cubic inch marine V-8 engines.

Use this kit during scheduled ignition maintenance or when diagnosing a rough-running, hard-starting, or misfiring engine traced back to worn contact points or a deteriorated distributor cap. Because it is matched to the single-point, screw-cap distributor design, it is not interchangeable with electronic or double-point ignition setups.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5275
• Product Type: Marine Tune Up Kit
• Distributor Type: Prestolite, Single Point, Screw Cap
• Compatible Distributor Models: IBM-7011, IBM-7013
• Compatible Engine Configuration: 8-cylinder, 305, 350, 454 cubic inch engines
• Material: Metal, Plastic, Rubber
• Weight: 0.54 pounds
• UPC: 808282259358

Fitment

• 1976-82, 8-cylinder, 305/350/454 cubic inch engines with IBM-7011 distributor
• 1983-88, 8-cylinder, 305/350/454 cubic inch engines with IBM-7013 distributor

Frequently Asked Questions

What does the Sierra 18-5275 Tune Up Kit include? The Sierra 18-5275 is a marine ignition tune up kit containing the contact point and related distributor service components needed to service a Prestolite single-point, screw-cap V-8 distributor in one kit.

What type of distributor does the 18-5275 kit fit? This kit is designed for Prestolite single-point distributors with a screw-on cap, specifically the IBM-7011 and IBM-7013 distributor models used on 8-cylinder 305, 350, and 454 cubic inch marine engines.

Which model years is Sierra part 18-5275 designed for? The 18-5275 kit corresponds to the 1976-82 model years with the IBM-7011 distributor and the 1983-88 model years with the IBM-7013 distributor, both on 305/350/454 cubic inch 8-cylinder engines.

Will the 18-5275 kit work on a double-point or electronic distributor? No. The 18-5275 is matched specifically to a Prestolite single-point, screw-cap distributor design and is not intended for double-point or electronic ignition systems.

What materials is the Sierra 18-5275 kit made from? The kit's components are made from a combination of metal, plastic, and rubber, matching the mix of materials found in the original distributor parts it services.

How much does the Sierra 18-5275 Tune Up Kit weigh? The Sierra 18-5275 Marine Tune Up Kit weighs 0.54 pounds.

Is Sierra 18-5275 an OEM or aftermarket part? Sierra 18-5275 is an aftermarket marine part manufactured to meet or exceed the specifications of the original equipment components it replaces.

Does Sierra back the 18-5275 kit with a warranty? Yes, the Sierra 18-5275 Tune Up Kit is covered under Sierra's standard customer satisfaction warranty that applies to its marine parts.

What is the difference between the screw cap and other cap styles for this distributor? The 18-5275 kit is built for the screw-on style distributor cap used on Prestolite single-point distributors, distinguishing it from clip-on or latch-style cap configurations on other distributor variants.

When should I replace the contact points serviced by this kit? Contact points in a Prestolite single-point distributor should be serviced when an engine shows rough idling, hard starting, or ignition misfire, and the Sierra 18-5275 kit provides the parts needed for that service.