Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededMSD IGNITIONPART NUMBER: 121-8517
Pro-Billet Distributor Buick 400-455
$62395
Ships on Sep 02, 2026
Lowest Price GuaranteeBuick
- Pro-Billet Distributor
- Buick 400-455
- Red
Features: - Easy-to-adjust mechanical advance with supplied springs and stop bushings
- Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
- Mechanical advance assembly can be locked out for crank trigger systems
- Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
- Must be used with MSD 6, 7 or 8-Series IgnitionNote: Not legal for sale or use on pollution-controlled vehicles.
- CNC machined billet aluminum housing and billet aluminum base
- Must be used with an MSD Ignition Control
- Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
- Mechanical advance assembly can be locked out for crank trigger systems
- Polished steel shaft is QPQ coated and guided by a sealed ball bearing
- Easy-to-adjust mechanical advance with supplied springs and stop bushings
- No CARB Exemption Order Number
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeDistributor
BrandMSD IGNITION
Package Height6.6
Package Width6.6
Package Length17.5
Weight4.7 PG
Part CategoryPerformance Parts
Marine UseNo
Housing FinishNatural
Housing Materialbillet aluminum
Ignition Box RequiredYes
QuantitySold individually
Distributor TypeHEI/Breakerless
Engine Make/SizeBuick 400-455
Computer-Controlled CompatibleNo
Trigger StyleMagnetic
Distributor Gear RotationStandard
Cap StyleMale/HEI
Slip CollarNo
Mechanical Tach DriveNo
Gear MaterialIron
Advance TypeMechanical
Vendor Part Number8517
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![High-Energy Ignition Coil for Breaker Points/Non-CD Electronic Ignition Systems [Shiny]](https://www.jegs.com/images/mini_200/500/555/555-40100.jpg)
JEGS
High-Energy Ignition Coil for Breaker Points/Non-CD Electronic Ignition Systems [Shiny]
Part Number : 555-40100
$3199$34.49
You Save$2.50
![High-Energy Ignition Coil and Bracket Kit [Chrome Coil and Chrome Panel Mount Bracket]](https://www.jegs.com/images/mini_200/500/555/555-40100k.jpg)
JEGS
High-Energy Ignition Coil and Bracket Kit [Chrome Coil and Chrome Panel Mount Bracket]
Part Number : 555-40100K
$4198
![High-Energy Ignition Coil for Breaker Points/Non-CD Electronic Ignition Systems [Red]](https://www.jegs.com/images/mini_200/500/555/555-40105.jpg)
JEGS
High-Energy Ignition Coil for Breaker Points/Non-CD Electronic Ignition Systems [Red]
Part Number : 555-40105
$2999
![High-Energy Ignition Coil and Bracket Kit [Red Coil and Chrome Panel Mount Bracket]](https://www.jegs.com/images/mini_200/500/555/555-40105k.jpg)
JEGS
High-Energy Ignition Coil and Bracket Kit [Red Coil and Chrome Panel Mount Bracket]
Part Number : 555-40105K
$3998
![High-Output Ignition Coil for Electronic and CD Ignition Systems [Red]](https://www.jegs.com/images/mini_200/500/555/555-40155.jpg)
JEGS
High-Output Ignition Coil for Electronic and CD Ignition Systems [Red]
Part Number : 555-40155
$4299$46.39
You Save$3.40
![Magnetic Trigger Cable [2-Pin, 6 Foot Long]](https://www.jegs.com/images/mini_200/500/555/555-4140.jpg)
![Self-Powered Timing Light [Powered by (2) D-Cell Batteries]](https://www.jegs.com/images/mini_200/500/555/555-w80578.jpg)
JEGS
Self-Powered Timing Light [Powered by (2) D-Cell Batteries]
Part Number : 555-W80578
$4799$52.99
You Save$5.00
MSD IGNITION
Magnetic Pickup Assembly For MSD Billet & Pro-Billet Distributors
Part Number : 121-84661
$5195
MSD IGNITION
Racing Distributor Rotor MSD/GM Distributors with Twist-On mount
Part Number : 121-8467
$1834
JEGS
Part Number : 555-40100
$3199$34.49
You Save$2.50
JEGS
Part Number : 555-40100K
$4198
JEGS
Part Number : 555-40105
$2999
Some parts are not legal for use in California or other states with similar laws / regulations
