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Davis Unified Ignition

Coil, Inferno, DUI, Points and Electronic Ignitions, Round Oil Filled

Part# : CH33798
Mfg#: DUI-31722
Sold As: Each
Ship Size: Standard
$64.99
List Price: $71.95
You Save 10%
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Estimated the week of 11/30/2026
Fits 1962–1976 Grand Prix View fitment for 28 models
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Inferno Ignition Coil by Davis Unified Ignition®

Heat-tested coil with tachometer-connection hardware and increased ignition output.

This Davis Unified Ignition® Inferno coil is designed for points or electronic ignition systems, excluding HEI/DUI in-cap applications. Heat testing addresses the underhood conditions that can weaken ignition coils. The round, oil-filled canister mounts in the original coil bracket. Hardware for tachometer connection is included. Increased output allows a wider spark-plug gap where the engine and ignition combination support it; select the gap for the actual application.

• Points or electronic ignition; not HEI/DUI in-cap • Round, oil-filled canister; original-bracket mounting • Heat-tested for underhood operation • Tachometer connection hardware included • Manufacturer gap guidance: up to 0.010 inch over stock; 0.055 inch in some applications

Notes

  • This item is not eligible for any further discounts or promotional pricing.
3
This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only. Learn More
We aim to provide accurate and complete product information. If you notice anything incorrect, missing, or unclear, please let us know.
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1982 Buick Grand National points and electronic ignitions - round oil filled
1984–1987 Buick Grand National points and electronic ignitions - round oil filled
1978–1987 Buick Regal points and electronic ignitions - round oil filled
1963–1976 Buick Riviera points and electronic ignitions - round oil filled
1961–1972 Buick Skylark points and electronic ignitions - round oil filled
1983–1986 Buick T-Type points and electronic ignitions - round oil filled
1938–1993 Cadillac 60 Special points and electronic ignitions - round oil filled
1965–1976 Cadillac Calais points and electronic ignitions - round oil filled
1959–1993 Cadillac DeVille points and electronic ignitions - round oil filled
1953–1993 Cadillac Eldorado points and electronic ignitions - round oil filled
1938–1951 Cadillac Series 60 points and electronic ignitions - round oil filled
1938–1951 Cadillac Series 61 points and electronic ignitions - round oil filled
1938–1976 Cadillac Series 62 points and electronic ignitions - round oil filled
1938–1951 Cadillac Series 63 points and electronic ignitions - round oil filled
1938 Cadillac Series 65 points and electronic ignitions - round oil filled
1938–1942 Cadillac Series 67 points and electronic ignitions - round oil filled
1940 Cadillac Series 72 points and electronic ignitions - round oil filled
1938–1942 Cadillac Series 75 points and electronic ignitions - round oil filled
1946–1964 Cadillac Series 75 points and electronic ignitions - round oil filled
1964–1977 Chevrolet Chevelle points and electronic ignitions - round oil filled
1964–1987 Chevrolet El Camino 1964–1977: points and electronic ignitions - round oil filled
1978–1987: points and electronic ignitions - round oil filled
1978–1983 Chevrolet Malibu points and electronic ignitions - round oil filled
1970–1988 Chevrolet Monte Carlo 1970–1977: points and electronic ignitions - round oil filled
1978–1988: points and electronic ignitions - round oil filled
1961–1988 Oldsmobile Cutlass 1961–1977: points and electronic ignitions - round oil filled
1978–1988: points and electronic ignitions - round oil filled
1959–1976 Pontiac Bonneville points and electronic ignitions - round oil filled
1978–1986 Pontiac Bonneville points and electronic ignitions - round oil filled
1959–1976 Pontiac Catalina points and electronic ignitions - round oil filled
1962–1976 Pontiac Grand Prix points and electronic ignitions - round oil filled
1978–1987 Pontiac Grand Prix points and electronic ignitions - round oil filled
1964–1973 Pontiac GTO points and electronic ignitions - round oil filled
1961–1973 Pontiac LeMans points and electronic ignitions - round oil filled
1961–1970 Pontiac Tempest points and electronic ignitions - round oil filled
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Coil, Inferno, DUI, Points and Electronic Ignitions, Round Oil Filled
Davis Unified Ignition Coil, Inferno, DUI, Points and Electronic Ignitions, Round Oil Filled