MSD 85551K Chevy V8 Pro-Billet Distributor Ignition Bundle with Ultra 6AL Box & Blaster 2 Coil

The MSD 85551K Pro-Billet Distributor Bundle is a complete ignition upgrade kit for Chevy V8 engines, combining MSD's most popular performance distributor with a matched ignition box and coil in a single package. The bundle includes the Pro-Billet Distributor, Ultra 6AL Ignition Box, and Blaster 2 Coil — plus timing tape for a straightforward installation. Note: Must be used with an MSD 6, 7, or 8-series ignition control. This product has no CARB Exemption Order Number and is legal for sale and use on uncontrolled (non-emissions controlled) vehicles only.

Pro-Billet Distributor Features:

• CNC machined billet 6061-T6 aluminum housing and billet aluminum base for precision tolerances and show-quality appearance
• Polished 0.500" steel shaft with QPQ coating for friction reduction and corrosion resistance, guided by a sealed ball bearing and extra-long sintered bushing for high-RPM stability
• Maintenance-free high-output magnetic pickup paired with a precision machined reluctor for stable, accurate trigger signals throughout the RPM range
• Advance plate and weights fine blanked from chrome moly steel and QPQ coated; advance weight pins are staked and TIG-welded to the plate
• Nylon pads ensure smooth operation of the advance weights
• Easy-to-adjust mechanical advance with supplied springs and stop bushings to tailor the timing curve for your application
• Mechanical advance assembly can be locked out for use with crank trigger systems
• Special oil tract improves lubrication to the distributor and cam gear
• Does not accept a vacuum advance canister
• Supplied with an HEI-style distributor cap and rotor (accepts Cap-A-Dapts)

Ultra 6AL Ignition Box Features:

• High output: 530 volts and 135mJ of spark energy
• Built-in adjustable rev limiter with rotary dials in 100 RPM increments
• Built-in LED for system diagnostics
• All wires exit through a locked, sealed connector

Blaster 2 Coil Features:

• 100:1 turns ratio and low primary resistance for high-voltage output
• Alkyd tower with high dielectric properties — less prone to carbon tracking
• Metal canister filled with premium-grade oil for cooling

What's Included:

• MSD Pro-Billet Distributor
• MSD Ultra 6AL Digital Ignition Box
• MSD Blaster 2 Coil
• Coil Bracket
• HEI-style distributor cap and rotor
• Timing tape
• Advance springs and stop bushings

The MSD 85551K ignition bundle delivers everything needed to upgrade from a stock ignition system in one complete, value-priced kit — saving hundreds compared to purchasing each component separately.