Thunderbolt Small Block Spark Plug Wire Set | United Ignition Wire 103
Thunderbolt Small Block Spark Plug Wire Set | United Ignition Wire 103
United Motor Products
17 in stock
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Thunderbolt Small Block Spark Plug Wire Set | United Ignition Wire 103
8mm ignition wire set fits Mercruiser 305 and 350 CID marine engines with Thunderbolt distributors.
- Thunderbolt small block marine spark plug wire set
- Fits Mercruiser 305 and 350 cu. in. marine engines from 1983-98 with Thunderbolt ignition systems
- Includes ignition coil wire
- 8mm blue SSC 100% Silicone wire for ultra low resistance of 270 Ohms per foot
- Carbon-latex coating for superior EMI/RFI suppression
- Heavy duty booting used to maintain dielectric properties
- Stainless steel and brass terminals for longevity and superior conductivity
- Replaces Mercury 84-816761Q4, 84-43376A4, 84-816761T4, 84-813720A4, & 84-816761A4
! 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.