Sierra Contact Set 18-5303, Replaces Mercury Marine 392-6325, for GM 305/350/454 & Ford 302 V8 and 3.8L V6 Marine Engines with Prestolite Ignition

The Sierra 18-5303 Contact Set is a replacement ignition point set for marine engines equipped with Prestolite conventional ignition distributors. It is engineered to meet or exceed the performance of the original equipment part it replaces, and is built to hold up to the vibration, heat, and moisture-heavy conditions of the marine environment. The contact set works with Ford and GM 4, 6, and 8 cylinder engines that use a Prestolite conventional ignition system, and is a key component in a full ignition tune-up alongside a matching condenser, distributor cap, and rotor.

Sierra cross-references the 18-5303 against distributor housings IBM-7014A, IBM-7011, IBM-7013, and IBM-7007/A, covering 3.8L six-cylinder engines as well as 305, 350, and 454 cubic-inch GM V8 engines and the Ford 302 V8. It carries a compact, machined construction sized to fit directly into the OEM distributor housing without modification. Sierra supplies this part to OEM engine manufacturers and boat builders as part of its ignition parts line, and it is backed by Sierra's standard customer satisfaction warranty.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5303
• Product Type: Contact Set (Ignition Points)
• UPC: 030999318701
• Weight: 0.03 pounds
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Finish: Machined
• Ignition System: Prestolite Conventional Ignition
• Compatible Distributor Numbers: IBM-7014A, IBM-7011, IBM-7013, IBM-7007, A

Fitment

• 1984-88, 6 Cylinder 3.8L Engine, Distributor No. IBM-7014A
• 1976-82, 8 Cylinder 305, 350, 454 Engine, Distributor No. IBM-7011
• 1983-88, 8 Cylinder 305, 350, 454 Engine, Distributor No. IBM-7013
• 1975-86, 8 Cylinder Ford 302 Engine, Distributor No. IBM-7007, A

Replaces (OEM)

• 2808870
• 855846-2
• 987136
• 987894
• Chrysler Inboard 2421173
• Crusader 41058
• Mercury Marine 392-6325
• OMC 980893
• Pleasurecraft R114002
• Volvo 835705-5

Frequently Asked Questions

What engines does the Sierra 18-5303 contact set fit? The Sierra 18-5303 fits 6-cylinder 3.8L marine engines using distributor IBM-7014A, 8-cylinder 305, 350, and 454 cubic-inch engines using distributors IBM-7011 or IBM-7013, and Ford 302 V8 engines using distributor IBM-7007 or IBM-7007A.

Is the 18-5303 compatible with Prestolite ignition systems? Yes, the 18-5303 contact set is designed for Ford and GM 4, 6, and 8 cylinder marine engines equipped with a Prestolite conventional ignition distributor.

What OEM part numbers does the Sierra 18-5303 cross-reference to? It cross-references to OEM numbers 2808870, 855846-2, 987136, and 987894, as well as Chrysler Inboard 2421173, Crusader 41058, Mercury Marine 392-6325, OMC 980893, Pleasurecraft R114002, and Volvo 835705-5.

How much does the 18-5303 contact set weigh? The Sierra 18-5303 contact set weighs 0.03 pounds.

What are the dimensions of the 18-5303? The 18-5303 measures 0.39 x 0.39 x 0.39 inches, a compact point set sized to install directly inside the Prestolite distributor housing.

Is this a genuine Sierra part or an aftermarket copy? The 18-5303 is a genuine Sierra-branded contact set, manufactured to meet or exceed the specifications of the original equipment part it replaces.

What other parts should be replaced along with the contact set during a tune-up? A full ignition tune-up on these Prestolite-equipped engines typically also replaces the matching condenser, distributor cap, and rotor alongside the 18-5303 contact set.

Does the 18-5303 come with a warranty? Yes, the Sierra 18-5303 is covered under Sierra's standard customer satisfaction warranty.

What is the finish or construction of the 18-5303 contact points? The contact points on the 18-5303 have a machined finish for a precise fit within the distributor housing.

Will the 18-5303 fit a Ford 302 marine engine? Yes, the 18-5303 is listed as compatible with Ford 302 V8 engines using distributor number IBM-7007 or IBM-7007A.

What distributor housings use the 18-5303 contact set? The 18-5303 is used with distributor housings IBM-7014A, IBM-7011, IBM-7013, and IBM-7007/IBM-7007A.