HD engine cooling & generator package

Years 1968–72 Models 3 Factory citations 3

Also described as HD engine coolingHD cooling & generator (alternator)HD engine cooling (4-core radiator)HD cooling & generator

Documented applications

Cutlass / 4-4-2

1968–69 Factory-verified

Not available with W-32; 1969 factory service list: "Heavy Duty Engine Cooling"

GM Heritage factory kit — 1969 Oldsmobile 442 Info Kit, p.247.
1970 Factory-verified

Not available with 3.42/3.91 axle or V-01/V-02. Factory list: "Heavy Duty Engine Cooling & Generator Pkg."

GM Heritage factory kit — 1970 Oldsmobile 442 Info Kit, p.232.
1972 Factory-verified

Factory list: "Heavy Duty Engine Cooling & Generator Package; N47 Power Steering Mandatory"

GM Heritage factory kit — 1972 Oldsmobile Cutlass 442 Info kit, p.190.

Full-Size 88 / 98

1968–69 Confirmed

—
1970–71 Confirmed

Mandatory with W33 for police use

Grade note: confirmed [HK: oldsmobile/1970_Oldsmobile_442_Info_Kit.txt p.184, p.237]

Toronado

1968–70 Confirmed

Available on any Toro; "Heavy Duty Engine Cooling" in 1969 service list

Grade note: confirmed [HK: oldsmobile/1969_Oldsmobile_442_Info_Kit.txt p.247]
1971–72 Confirmed

61-amp in 1972

This page aggregates every documented appearance of Y-72 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.