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Stringer

COMPLETE LOWER GEAR HOUSING ASSEMBLY - V6 & V8 (1978-1985)

No. 28830
OEM: 987242
Ratio: 12:22
Strongest Lower Gear Housing Assembly in the
Marine Industry for 1978-1985* OMC V6 and V8 Sterndrives

Without Shift Assembly

All GLM replacement lower gear housings for the V6 and V8 OMC Stringer sterndrives have the
new heavy duty #22666 gear sets. This new gear set has fewer, larger, stronger teeth. The pinion
gear has 12 teeth and the forward and reverse gears have 22 teeth. The original OEM gear set has
14 teeth on the pinion and 26 teeth on the forward and reverse gears. During the gear machining
process an additional pass is made over each tooth for a finer surface. This makes the gear
operation especially quiet. These durable gears are capable of operating with up to 300 horsepower.
All GLM lower gear housings have the large 1-1/4 inch diameter prop shafts with a reverse thrust
washer installed between the shaft and reverse gear**.

*Many 1978-1980 OMC sterndrives have had the hydraulic shift lower gear housing replaced with the 1981-85 mechanical shift lower gear
housing. Sterndrives with the original hydraulic shift lower gear housing do not have an ESA (electronic shift assist) box or overstroke
switches on the shift converter. 1978-1980 sterndrives that have been converted to the mechanical shift lower gear housing do/must have
the ESA and overstroke switches installed.
**For model year 1991 OMC increased the prop shaft diameter at the carrier needle bearing (not the prop splines) from 1-3/16 to 1-1/4
inches. The larger prop shaft/needle bearing is a direct replacement into the 1981-1985 lower gear housing and is installed in all GLM lower
gear housings.

Year Model Lower Housing Lower Complete
1981-85 V6, 3.8L 28600 28830

1985 V6, 4.3L 28600 28830
1981-85 V8, 5.0L, 200-230HP 28600 28830

1981-85 V8, 5.7L, 260HP 28600 28830

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