Description
Part Number: 85555
MSD Pro-Billet Chevrolet V8 Distributor – Black Anodized
Precision CNC-machined 6061-T6 billet aluminum distributor engineered for high-RPM stability, featuring a maintenance-free magnetic pickup and adjustable mechanical advance for Chevrolet V8 engines.
Key Features & Technical Advantages
- ☑ CNC-machined 6061-T6 billet aluminum body with sleek black anodized finish
- ☑ Oversized 0.500″ steel shaft with friction-reducing QPQ coating, guided by sealed ball bearings
- ☑ Maintenance-free magnetic pickup and reluctor provide trigger signals accurate within 1 degree up to 10,000+ RPM
- ☑ Easy-to-adjust mechanical advance mechanism with included springs and stop bushings for custom timing curves
- ☑ Advance mechanism can be easily locked out for crank trigger or electronic fuel injection (EFI) setups
- ☑ Special oil tract and O-ring seal grooves for optimized gear lubrication and oil pressure control
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | MSD Ignition |
| Manufacturer Part Number | 85555 |
| Engine Fitment | Chevrolet Small Block & Big Block V8 (SBC / BBC) |
| Housing Material | CNC Machined 6061-T6 Billet Aluminum |
| Housing Finish | Black Anodized |
| Shaft Diameter | 0.500″ (QPQ Coated Steel) |
| Trigger Mechanism | High-Output Magnetic Pickup |
| Advance Type | Adjustable Mechanical / Lockout Capable |
| Cap & Rotor Included | Yes (HEI Style Cap PN 84333, Race Rotor PN 8467) |
| Required Ignition Box | MSD 6, 7, or 8-Series Ignition Control Box |
What’s Included in the Box
- MSD 85555 Pro-Billet Chevrolet V8 Distributor (Black Anodized)
- MSD HEI Style High-Performance Distributor Cap (PN 84333)
- MSD Race Rotor (PN 8467)
- Ignition Wire Retainer Plate & Mounting Hardware
- Distributor Mounting Gasket
- Mechanical Advance Spring & Bushing Tuning Kit
Engineered to deliver exceptional timing accuracy under severe competition conditions, MSD Pro-Billet distributors are the benchmark for high-performance Chevrolet V8 engines. JP Racing is your trusted UK supplier for official MSD Ignition components, providing dedicated technical support and fast UK delivery.




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