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Range Sleeve/Synchro
Starting with the 2007 model year, General Motors introduced a series of new transfer cases built by Magna Powertrain replacing the New Venture Gear units used in the past. Check out our aftermarket components and remanufactured assemblies for these MP transfer cases.

The new units are available in the models below:

MODELProActive Gear Part #RPOTRANSInput Shaft SplinesOutput Shaft SplinesChain SizeApplication
MP1222LDPG1222-1NQG4L60E27T32T7/16-1.25"1/2 Ton
MP1222LDPG1222-2NQG6L8032T32T7/16-1.25"1/2 Ton
MP1225HDPG1225GM-1NQG6L9029T31T7/16-1.5"3/4 Ton
MP1226SDPG1226GM-2/PG1226GM-3NQG6L90LCT100029T31T7/16-1.5"3/4-1 Ton
MP1625HDPG1625-1NQF6L9029T31T7/16-1.5"3/4 Ton
MP1626SDPG1626-2/ PG1626-3NQF6L90LCT100029T/33T31T/32T7/16-1.5"3/4-1 Ton
MP3023LDPG3023-1NQH4L60E27T32T7/16-1.25"1/2 Ton
MP3023LDPG3023-2NQH2ML7032T32T7/16-1.25"1/2 Ton
MP3024HDPG3024-1NQH6L9029T31T7/16-1.5"3/4 Ton
NQG: Transfer Case, Manual Shift, Floor Mounted Shifter
NQF: Transfer Case, Electronic shift with dial control
NQH: Transfer Case, Auto/Active Shift, 2-Speed
**All models use Dexron VI fluid

Common Problems
3023/3024Shift lever bearing failure: Bearings are overheated due to the lever balls being placed off center from the lever, resulting in uneven pressure on the bearing. Typically only the 3023LD experienced this problem, GM fixed this by only using the HD levers with thicker collars and 10MM balls (vs 13MM) to apply pressure evenly. ProActive Gears only makes the HD levers to be used with 10MM lever balls, which will work in both transfer cases.
All CasesGrinding, popping out of gear: caused by worn range forks and its pads due to contact area available. ProActive Gear range forks and mating high/low clutches are made with a wider flange on the slider and increased fork area to compliment this increased contact area. These will also fit previous models without the increased contact area.
All CasesMainshaft snap ring failure causing collateral damage within the transfer case. ProActive Gears has made a Heavy Duty snap ring to fit all mainshafts to correct this issue.

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Magna Power HD Clutch Control Lever Kit Magna Power HD Clutch Control Lever Kit

Magna Power HD Clutch Control Lever Kit

Our Price: $161.50
magna power input gear 19132978 Input Gear MP 3023; 32-Spline, 148MM

Ground Tooth Gear

Our Price: $115.00
HV501 Transfer Case Chain; MP1222LD/3023LD HV501 Transfer Case Chain; MP1222LD/3023LD

.4346"x1.25"x84P Chain; MP1222LD/3023LD

Our Price: $75.00
Part # HV074 Transfer Case Chain  .4346"x1.5"x84P Part # HV074 Transfer Case Chain .4346"x1.5"x84P

HV074 Transfer Case Chain

Our Price: $73.00
19133041 Mode Fork 19133041PG Mode Fork MP1625/1626

Mode Fork MP1625/1626

Our Price: $58.50
19133050 Mode Fork 19133050PG Mode Fork MP1222/1225/1226

Mode Fork MP1222/1225/1226

Our Price: $56.00
19133031 Range Fork 19133031PG Range Fork

Range Fork MP1625/1626 3023/3024

Our Price: $55.00
magna power range sleeve 19299093; High/Low Clutch; Range Sleeve

High/Low Clutch; Range Sleeve; 29T, Wide Flange (1st Design 142MM)

Our Price: $46.50
19260068; High/Low Clutch; Range Sleeve 19260068; High/Low Clutch; Range Sleeve

High/Low Clutch; Range Sleeve; 30T, Wide Flange (1st Design 148MM)

Our Price: $46.50
19133135PG  1.5" Driven Sprocket 19133135PG 1.5" Driven Sprocket

1.5" Driven Sprocket

Our Price: $42.00
19260065 Range Fork 19260065PG Range Fork MP1222/1225/1226

Range Fork; MP1222/1225/1226

Our Price: $41.50
19133134PG  1.25" Driven Sprocket 19133134PG 1.25" Driven Sprocket

1.25" Driven Sprocket

Our Price: $40.00