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Part fits the following years: 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973

LeMans Ignition Control Box, 6AL-2, by MSD

Part# MSD6421

Mfg# 6421

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SAVE: $28.96 Retail: $318.95

OPGI Price: $289.99


Brand: MSD
Part Type: (P) High Performance, designed to improve performance
Years: Sold As: EACH
2015 LeMans Catalog Page: 295
2016 LeMans Catalog Page: 301


Powerful digital ignition control

Features a 2-step rev limiter

  • NOTE1: This high-performance item is not eligible for any further discounts or promotional pricing.

The 6AL-2 is the new generation of ignition controls from MSD featuring a new housing, digital controls and more power in a sleek package. Inside every 6AL-2 is an advanced micro-controller that manages the timing and rpm of the ignition as well as maintaining a spark output of 535-volts. In order to ensure complete combustion, the multiple sparks burn inside the cylinder for 20° of crankshaft rotation. Two other benefits are the rev-limiting controls: one for high-end over rev and the other can be set to activate off a clutch or trans-brake to set a launch limit. Rev limiters are controlled via rotary dials providing easy adjustments at any time. Ignition boxes are sold per each and include wiring, vibration mounts and complete instructions. Compatible with 4-cylinder, 6-cylinder and 8-cylinder engines.

Make & ModelYear RangeApplication Details
Chevrolet Chevelle1964-1977
Chevrolet Malibu1978-1988
Chevrolet El Camino1964-1977
Chevrolet El Camino1978-1988
Chevrolet Monte Carlo1970-1977
Chevrolet Monte Carlo1978-1988
Pontiac GTO1961-1973
Pontiac LeMans1961-1973
Pontiac Tempest1961-1973
Pontiac Grand Prix1959-1977
Pontiac Catalina1959-1977
Pontiac Bonneville1959-1977
Olds Cutlass/4421961-1977
Buick Skylark1961-1972
Buick Riviera1963-1976
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