Description
Quicksilver 805759Q3 Distributor Cap Kit GM V8 MerCruiser Thunderbolt IV V HEI
Restore dependable ignition performance with the Quicksilver 805759Q3 distributor cap kit. Designed for marinized GM V-8 MerCruiser engines with Thunderbolt IV and Thunderbolt V HEI ignition systems, this OEM-spec kit includes the distributor cap, rotor, and cap gasket for complete ignition cap service.
Key Features
- Quicksilver distributor cap kit for marinized GM V-8 MerCruiser engines
- Fits Thunderbolt IV and Thunderbolt V HEI ignition systems where specified
- Includes distributor cap, rotor, and cap gasket
- Cap is made from a blend of PBT and PET plastics for increased strength, stiffness, and resistance to warpage
- Solid brass inserts resist corrosion and electrical pitting for long service life
- Designed to resist RFI interference with onboard electronics
- Produced to meet Mercury Marine OEM specifications for MerCruiser engine protection
- High strength-to-weight ratio supports durability and resistance to thermal cracking
Fitment / Product Details
- Brand: Quicksilver
- Part Number: 805759Q3
- BU Part ID: 805759Q3
- Product Type: Distributor Cap Kit / Cap and Rotor Kit
- Application: Marinized GM V-8 MerCruiser engines with Thunderbolt IV and Thunderbolt V HEI ignition systems
- Engine Types: General Motors V-8 MerCruiser marine engines with compatible HEI Thunderbolt ignition
- HP Range: Not horsepower-specific; verify by engine model, ignition system, and serial number
- Serial Ranges: Not provided; verify by MerCruiser engine serial number and ignition parts diagram
- Year Range: Not provided; verify by engine model, serial number, and service manual
- UPC: 745061040526
- Country of Origin: US
- Prop 65: No
- Package Dimensions: 7.95 in. L x 3.95 in. H
- Package Weight: 0.695 lb
- Package Quantity: 1
- Brand Store Category: Parts
- Brand Store Subcategory: Ignition System
- Supersedes / Replaces: 805759T6
- Fitment Note: Confirm compatibility by Quicksilver part number, MerCruiser engine model, engine serial number, distributor style, Thunderbolt IV/V HEI ignition system, owner’s manual, or service manual before ordering.
What’s Included
- Distributor cap
- Rotor
- Cap gasket
Expanded Fitment
- Marinized GM V-8 MerCruiser engines where 805759Q3 is specified
- MerCruiser V-8 engines with Thunderbolt IV HEI ignition systems
- MerCruiser V-8 engines with Thunderbolt V HEI ignition systems
- Common marine GM V-8 service applications using the matching distributor cap, rotor, and gasket configuration
- Not for all MerCruiser V-8 engines; verify exact distributor and ignition system before ordering
Why You Should Buy
- Complete ignition service kit with cap, rotor, and gasket included
- OEM-spec Quicksilver construction helps protect compatible MerCruiser engines
- Brass inserts help resist corrosion and electrical pitting in marine environments
- PBT/PET plastic construction helps resist warpage and thermal cracking
- RFI-resistant design helps reduce interference with onboard electronics
- Ideal replacement during tune-ups, ignition troubleshooting, and scheduled maintenance
Common Applications
- MerCruiser GM V-8 ignition tune-up service
- Thunderbolt IV distributor cap and rotor replacement
- Thunderbolt V HEI ignition system service
- Replacement of cracked, corroded, worn, or carbon-tracked distributor caps
- Marine engine maintenance where Quicksilver 805759Q3 is specified
FAQ
- What is Quicksilver 805759Q3? It is a distributor cap kit for marinized GM V-8 MerCruiser engines with Thunderbolt IV and Thunderbolt V HEI ignition systems.
- What comes in the kit? The kit includes the distributor cap, rotor, and cap gasket.
- What engines does it fit? It fits compatible GM V-8 MerCruiser marine engines with Thunderbolt IV or Thunderbolt V HEI ignition systems where this part number is specified.
- Is this horsepower-specific? No. This kit should be matched by engine model, serial number, distributor type, and ignition system rather than horsepower alone.
- What part number does it replace? Your supplied data lists 805759Q3 as superseding / replacing 805759T6.
- Is Prop 65 required for this item? No. Your supplied product data lists Prop 65 as “No.”
- When should this distributor cap kit be replaced? Replace it during scheduled ignition tune-up service or when the cap, rotor, or gasket shows wear, corrosion, cracking, carbon tracking, moisture intrusion, or poor ignition performance.
- How do I confirm fitment? Confirm using Quicksilver part number 805759Q3, your MerCruiser engine serial number, distributor style, Thunderbolt IV/V HEI ignition system, owner’s manual, or service manual.