Sierra 18-5347 - Prestolite V6 & V8 Ignition Condenser
Sierra 18-5347 - Prestolite V6 & V8 Ignition Condenser
Sierra
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Sierra 18-5347 - Prestolite V6 & V8 Conventional Ignition Condenser
Servicing a conventional Prestolite marine distributor does not always require a complete tune-up kit. Sierra 18-5347 supplies the replacement ignition condenser for selected V6 and V8 applications using screw-down or clip-down distributor caps. Match the distributor identification and replacement reference to the installed system, especially if the engine has been converted to electronic ignition.
Part Specifications
- Part Number: 18-5347
- Component: Ignition condenser
- Distributor Application: Selected Prestolite V6 and V8 conventional marine ignition distributors
- Listed Cap Styles: Screw-down and clip-down
- Replaces Mercury: 392-6324, 392-898253002, 8M6001249, F16900023, F16900032 and F16900189
- Replaces Chrysler: 3420600 and 1818757
- Replaces OMC: 987895 and 980894
If you also need the associated tune-up components, the Sierra 18-5276 Prestolite V6 single-point screw-down-cap kit and Sierra 18-5277 Prestolite V8 clip-down-cap kit each list 18-5347 among their contents. Choose a kit only after confirming its specific distributor application; sharing this condenser does not make the kits interchangeable.
Confirm Fitment Before Ordering
Use the parts diagrams available on our website to identify the condenser specified for your distributor. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; include the distributor identification and details of any ignition conversion.
Additional Information
- Vendor: Sierra
- Part Number: 18-5347
- OEM Cross-Reference: Mercury 392-6324, 392-898253002, 8M6001249, F16900023, F16900032 and F16900189; Chrysler 3420600 and 1818757; OMC 987895 and 980894
Installation Notes
Refer to the applicable engine and distributor service manual for condenser installation, lead routing, contact-point service and specified ignition checks.
Frequently Asked Questions
Q: Is 18-5347 intended for conventional or electronic ignition?
A: Its listed application is conventional Prestolite V6/V8 marine distributors. Do not assume it is required or compatible after an electronic-ignition conversion.
Q: Does it cover screw-down and clip-down distributor caps?
A: Both cap styles are listed, but cap attachment alone does not confirm fitment. Verify the Prestolite distributor and required condenser reference.
Q: Are points, a rotor and a cap included?
A: This listing is for the condenser, not a complete tune-up kit. The linked kits include additional components for their separately specified distributor applications.
Q: Can the V6 and V8 tune-up kits be substituted for one another?
A: No interchangeability is established. The 18-5276 kit is listed for V6 single-point screw-down-cap distributors, while 18-5277 is listed for V8 clip-down-cap distributors.
Q: What capacitance or lead dimensions should I match?
A: Those specifications are not supplied in this listing. Match the verified replacement reference and distributor application rather than choosing by appearance or assumed electrical values.

! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.