Advance 306 Transfer Case Parts Manual
Model 306 Parts List
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 1 | 306101 | Front Housing Aluminum - | 1 | No longer available - Call for replacement | ||
| 306105 | Front Housing Iron - | 1 | Call for availability | |||
| 2 | 306102 | Rear Housing Aluminum - | 1 | $6,532.33 | Add to Cart | |
| 306106 | Rear Housing Iron - | 1 | Call for availability | |||
| 3 | 306107 | Disconnect Cover Front Output - | 1 | $2,425.85 | Add to Cart | |
| 4 | 306201 | Output Bearing Retainer | 1 | $268.45 | Add to Cart | |
| 5 | 306202 | Input Bearing Retainer | 1 | $219.65 | Add to Cart | |
| 6 | 306203 | Input Bearing Retainer Blank - | 1 | $163.98 | Add to Cart | |
| 306203 | Input Bearing Retainer Tapped Hole - | 1 | $163.98 | Add to Cart | ||
| 7 | 306301 | Output Gear Hi 5P 1 :1 | 1 | Call for availability | ||
| 306305 | Output Gear Hi 5P .86:1 | 1 | Call for availability | |||
| 306307 | Output Gear Hi 6P 1 :1 | 1 | Call for availability | |||
| 306309 | Output Gear Hi 6P .86:1 | 1 | Call for availability | |||
| 3063011 | Output Gear Hi 5P 1 :1 | 1 | Call for availability | |||
| 3063015 | Output Gear Hi 5P .86:1 | 1 | Call for availability | |||
| 3063017 | Output Gear Hi 6P 1 :1 | 1 | $2,051.05 | Add to Cart | ||
| 3063019 | Output Gear Hi 6P .86:1 | 1 | $1,728.69 | Add to Cart | ||
| 8 | 306302 | Output Gear Low 5P - - | 1 | Call for availability | ||
| 3063012 | Output Gear Low 6P - - | 1 | $4,282.73 | Add to Cart | ||
| 9 | 306304 | Input Gear Hi 5P 1 :1 | 1 | Call for availability | ||
| 306306 | Input Gear Hi 5P .86:1 | 1 | Call for availability | |||
| 306308 | Input Gear High 6P- 1 :1 - - | 1 | Call for availability | |||
| 3063010 | Input Gear High 6P .86:1 | 1 | $3,565.69 | Add to Cart | ||
| 10 | 306353 | High-low Shift Collar | 1 | $919.54 | Add to Cart | |
| 12 | 3066010 | Output Gear Bearing Cone Spacer | 2 | $82.50 | Add to Cart | |
| 13 | 306401 | Output Shaft | 1 | $10,358.13 | Add to Cart | |
| 15 | 3064010 | High-low Shift Shaft See # 37 - | 1 | $135.17 | Add to Cart | |
| 17 | 306451 | Input Shaft With Pinion | 1 | $6,002.85 | Add to Cart | |
| 18 | 306501 | High-low Shift Fork See # 37 - | 1 | $390.48 | Add to Cart | |
| 19 | 30602 | Disconnect Assembly-see Page 4 | 1 | $5,407.88 | Add to Cart | |
| 20 | 306601 | Input Yoke Spacer | 1 | $42.46 | Add to Cart | |
| 21 | 306602 | Output Shaft Bearing Spacer | 1 | $340.77 | Add to Cart | |
| 306607 | Output Shaft Bearing Spacer | 1 | $145.28 | Add to Cart | ||
| 22 | 306781 | Output Shaft Seal Sleeve | 1 | $200.65 | Add to Cart | |
| 23 | 306801A | Input Bearing Shim .005 - | 3 | $8.38 | Add to Cart | |
| 306801B | Input Bearing Shim .007 - | 3 | $9.12 | Add to Cart | ||
| 306801C | Input Bearing Shim .020 - | 3 | $15.45 | Add to Cart | ||
| 24 | 306802A | Output Bearing Shim .005 - | 3 | $7.79 | Add to Cart | |
| 306802B | Output Bearing Shim .007 - | 3 | $14.93 | Add to Cart | ||
| 306802C | Output Bearing Shim .020 - | 3 | $15.47 | Add to Cart | ||
| 25 | 306803A | Output Gear Bearing Shim- .003 | 3 | $15.30 | Add to Cart | |
| 306803B | Output Gear Bearing Shim- .005 | 3 | $8.33 | Add to Cart | ||
| 306803C | Output Gear Bearing Shim- .007 | 3 | $17.87 | Add to Cart | ||
| 306803D | Output Gear Bearing Shim- .020 | 3 | $15.89 | Add to Cart | ||
| 26 | 306851 | Shift Cylinder Cap | 1 | Call for availability | ||
| 27 | 306852 | Shift Cylinder | 1 | $105.21 | Add to Cart | |
| 28 | 306853 | High Low Shift Piston - | 1 | Call for availability | ||
| 29 | 306807A | High Low Shift Shaft Shim .005 - | 3 | $1.33 | Add to Cart | |
| 306807B | High Low Shift Shaft Shim .007 - | 2 | $1.76 | Add to Cart | ||
| 306807C | High Low Shift Shaft Shim .020 - | 1 | $1.52 | Add to Cart | ||
| 306807D | High Low Shift Shaft Shim .050 - | 1 | Call for availability | |||
| 33 | 306858 | High Low Shift Return Spring - | 1 | $19.17 | Add to Cart | |
| 34 | 306609 | Output Spacer | 1 | $284.46 | Add to Cart | |
| 35 | 3068510 | Breather Assembly | 1 | No longer available - Call for replacement | ||
| 3068513 | Modified Output Gear Snap Ring | 4 | $29.54 | Add to Cart | ||
| 37 | 3068532 | High-low Shift Fork & Shaft Assy | 1 | $630.13 | Add to Cart |
Model 306 Parts List (continued), Service Assemblies and Kits
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| JM612910 | Input Shaft Bearing Cup | 2 | Call for availability | |||
| JM612949 | Input Shaft Bearing Cone | 2 | Call for availability | |||
| 47420 | Output Shaft Bearing Cup | 2 | Call for availability | |||
| 47487 | Output Shaft Bearing Cone | 2 | Call for availability | |||
| 29630 | Output Gear Bearing Cup | 4 | Call for availability | |||
| 33475 | Output Gear Bearing Cup | 4 | Call for availability | |||
| 29675 | Output Gear Bearing Cone | 4 | Call for availability | |||
| 33275 | Output Gear Bearing Cone | 4 | Call for availability | |||
| 306603 | Output Gear Bearing Cup Spacer | 2 | Call for availability | |||
| 306604 | Output Gear Bearing Cup Spacer | 2 | Call for availability | |||
| 3068532 | High-low Shift Fork & Shaft Assy | 1 | $630.13 | Add to Cart | ||
| M612949XS | Output Gear Bearing Cone Spacer | 2 | Call for availability | |||
| 20DU20 | Output Shaft Bushing | 1 | Call for availability | |||
| RR475 | Output Gear Snap Ring | 2 | Call for availability | |||
| N5000475 | Output Gear Snap Ring | 4 | Call for availability | |||
| 3068513 | Output Gear Snap Ring | 4 | $29.54 | Add to Cart | ||
| 306605 | Output Gear Bearing Spacer | 2 | No longer available - Call for replacement | |||
| 208853 | Yoke Retention Washer | 3 | $20.11 | Add to Cart | ||
| 12512LN | Yoke Retention Lock Nut | 3 | Call for availability | |||
| 12HP50NS | #12 O-ring Drain Plug | 2 | Call for availability | |||
| 7404011 | Magnetic Plug | 3 | Call for availability | |||
| 22SS12M | #12 O-ring Magnetic Drain Plug | 1 | Call for availability | |||
| 12X200 | Housing Alignment Dowel | 2 | Call for availability | |||
| 3816X250 | Hex Head Cap Screw Hsg Flgs - | 20 | Call for availability | |||
| 3816LN | Lock Nut Housing Flanges - | 20 | Call for availability | |||
| 3816X125 | Hex Head Cap Screw Cvr Att. - | 25 | Call for availability | |||
| 1420X275 | Socket Head Cap Scr Cyl Cap - | 3 | Call for availability | |||
| 1420X150 | Hex Head Cap Screw Cyl Cap - | 3 | Call for availability | |||
| 51618X100 | Socket Head Screw Piston - | 1 | Call for availability | |||
| 14X125 | Roll Pin See # 37 - | 1 | Call for availability | |||
| 711820 | Shift Piston Seal | 1 | Call for availability | |||
| AS568031 | Shift Cylinder Cap Sealing O-ring | 2 | Call for availability | |||
| 1EXPPLUG | Shift Rod Housing Hole Cap | 1 | Call for availability | |||
| 306204 | Shift Rod Housing Hole Cover | 1 | $81.14 | Add to Cart | ||
| 3816X150 | Hex Head Cap Screw -see # 37 | 1 | Call for availability | |||
| 95601A395 | Drain Plug Gasket | 3-5 | Call for availability | |||
| 38NPT | Street Ell See Also #81 - | 1 | Call for availability | |||
| 301370 | Breather See Also Item 35 - | 1 | Call for availability | |||
| 306805 | Gasket-washer | 1 | $12.60 | Add to Cart | ||
| 3068514 | Speedo Sender Plug | 1 | $22.70 | Add to Cart | ||
| 95606A270 | Speedo Sender Plug Gasket Service Assemblies & Kits | 1 | Call for availability | |||
| 30601 | Seal Kit | No longer available - Call for replacement | ||||
| 30613 | Dip Stick Kit 1 1/16 Drain Hole - | Call for availability | ||||
| 30614 | Dip Stick Kit 3/4” Drain Hole - | Call for availability | ||||
| 306S1 | Input Gear & Shaft Assembly | $4,176.23 | Add to Cart | |||
| 306S2 | Input Gear & Shaft Assembly | Call for availability | ||||
| 306S3 | Input Gear & Shaft Assembly | Call for availability | ||||
| 306S4 | Input Gear & Shaft Assembly | Call for availability |
Air Control Updates, Application Parts and 306-02 Disconnect
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 306851 | Air Cylinder Cap | 1 | Call for availability | |||
| 306852 | Air Cylinder | 1 | $105.21 | Add to Cart | ||
| 306853 | Shift Piston | 1 | Call for availability | |||
| 306807A | High-low Shaft Shim .005 | A/R | $1.33 | Add to Cart | ||
| 306807B | High-low Shaft Shim .007 | A/R | $1.76 | Add to Cart | ||
| 306807C | High-low Shaft Shim .020 | A/R | $1.52 | Add to Cart | ||
| 306807D | High-low Shaft Shim .050 | A/R | Call for availability | |||
| 1420X275 | Hex Head Cap Screw Cyl Cap - | 3 | Call for availability | |||
| 51618X10 | Flat Head Socket Screw Piston - | 1 | Call for availability | |||
| 711820 | Piston V-seal Application Specific Parts | 1 | Call for availability | |||
| 35083 | Disconnect Oil Seal | 1 | Call for availability | |||
| 34889 | Input Oil Seal | 1 | Call for availability | |||
| 37330 | Input Oil Seal | Call for availability | ||||
| 32397 | Output Oil Seal | 1 | Call for availability | |||
| 6347111 | End Yoke | 2 | Call for availability | |||
| 6445511 | End Yoke | 1 -3 | Call for availability | |||
| 680112 | #12 O-ring To 1/2 Tube Ell | 1 | Call for availability | |||
| 812C5BUS | 3/4-16 To #12 Jic Ell | 1 | Call for availability | |||
| 3588514G | Dipstick Tube | 1 | $81.23 | Add to Cart | ||
| 3588513L | Dipstick 11 .5qt Fill Qty - | 1 | $43.75 | Add to Cart | ||
| HK1313 | Clamp | 1 | Call for availability | |||
| 30602 | Disconnect Components | $5,407.88 | Add to Cart | |||
| 306103 | Disconnect Housing | 1 | $1,131.13 | Add to Cart | ||
| 306352 | Disconnect Shift Collar | 1 | $414.84 | Add to Cart | ||
| 306402 | Disconnect Output Shaft | 1 | $1,026.21 | Add to Cart | ||
| 306405 | Disconnect Shift shaft-See#29 | 1 | $79.83 | Add to Cart | ||
| 306502 | Disconnect Shift Fork See#29 - | 1 | $265.80 | Add to Cart | ||
| 306854 | Shift Cylinder Cap | 1 | Call for availability | |||
| 306855 | Shift Cylinder | 1 | $100.79 | Add to Cart | ||
| 306856 | Shift Piston | 1 | Call for availability | |||
| 306857 | Shift Return Spring | 1 | $34.47 | Add to Cart | ||
| 21492 | Shift Signal Switch Output Ball Bearing | 1 | Call for availability | |||
| N5000500 | Bearing Retention Snap Ring | 1 | Call for availability | |||
| 1420X150 | Hex Head Cap Screw Cyl Cap - . | 3 | Call for availability | |||
| 51618X100 | Flat Head Cap Screw Piston - | 1 | Call for availability | |||
| 14X125 | Roll Pin See #29 - | 1 | Call for availability | |||
| 711080 | Piston V Seal | 1 | Call for availability | |||
| AS026 | Cylinder Sealing O-ring Piston Screw Lock Washer | 2 | Call for availability | |||
| 306806 | Signal Switch Washer | 1 | Call for availability | |||
| 3068518 | Shift Fork & Shaft Assembly Disconnect Air Control Update | 1 | $455.16 | Add to Cart | ||
| 3068521 | Disconnect Cylinder Cap | 1 | $108.32 | Add to Cart | ||
| 3068523 | Disconnect Piston | 1 | $43.14 | Add to Cart | ||
| 51618 | Socket Head Cap Screw Piston - | 1 | Call for availability | |||
| 30614 | For Units With A .750 Drain Plug | Call for availability | ||||
| 30613 | For Units With A #12 O-ring Plug | Call for availability |
No parts match that search. Try the part number with no dashes.
This is the complete factory parts breakdown for the Advance Transfer Case 306, with every part in the manual matched to our live inventory. We stock 63 of the 149 parts above; click any part number to view it, or add it straight to your cart. Click a number on any diagram to jump to that part.
This this Illustrated Parts List covering the 306 transfer case covers the shafts, gear sets, housings and service parts for your transfer case, with exploded diagrams and OEM part numbers.
| Models covered | 306 |
| Transfer case type | transfer case |
| Document | Illustrated Parts List |
| Length | 15 pages |
| Format | PDF, free download |
What’s inside
- Input, output & idler shaft assemblies
- Gear sets & ratio components
- Case halves, covers & housings
- Shift mechanism & air-control parts
- Bearing, seal & gasket kits
- Power-take-off & split-shaft components (where fitted)
- Exploded diagrams with OEM part numbers
Parts parts & units we stock
Pro Gear and Transmission stocks new, remanufactured and good-used parts for these transfer case units:
Not sure exactly which unit you have? Check our identification guides, or Ask an Expert. Send us photos of your data tag and our drivetrain specialists will identify the unit and the exact parts you need. Or call (877) 776-4600.