Mack CRD 151 Differential Parts Manual
Crd 151
Item 1Item 2Item 3Item 4Item 5Item 6Item 5Item 6Item 7Item 8Item 9Item 10Item 11Item 12Item 13Item 14Item 15Item 16Item 17Item 18Item 19Item 20Item 21Item 22Item 23Item 24Item 25Item 22Item 26Item 27Item 28Item 29Item 30Item 31Item 32Item 33Item 34Item 35Item 36Item 37Item 38Item 39Item 40Item 41Item 42Item 43Item 44Item 45Item 45Item 46Item 47Item 48Item 49Item 51Item 52Item 53Item 54Item 55Item 56Item 57Item 58Item 59Item 60Item 61Item 62Click a number on the diagram to highlight that part below.
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 1 | 43KH223 | Nut, Adjusting | Interchanges with Mack 25500869 | $43.71 | Add to Cart | |
| 2 | 64AX267 | Cup, Carrier (RH) | Interchanges with Mack 25499257 | $97.12 | Add to Cart | |
| 3 | 62AX471 | Cone, Carrier (R/H) | Interchanges with Mack 25108903 | $62.96 | Add to Cart | |
| 4 | 25109848 | Case (R/H) | Interchanges with Mack 20840857 | $596.23 | Add to Cart | |
| 5 | 38KH220 | Washer, Side Gear Thrust (Steel) | Interchanges with Mack 25100250. Sold as a 2-pack | $44.39 | Add to Cart | |
| 6 | 34KH263 | Gear, Side (Fine Spline) (43T) | Interchanges with Mack 21414627 | $190.41 | Add to Cart | |
| 7 | 32KH228A | Spider | Interchanges with Mack 25502609 | $140.00 | Add to Cart | |
| 8 | 33KH263A | Gear, Pinion Spider | Interchanges with Mack 21415491 | $122.18 | Add to Cart | |
| 9 | 37KH210 | Washer, PinionThrust (Steel) | Interchanges with Mack 25499008. Sold as a 4-pack | $79.20 | Add to Cart | |
| 10 | 62AX404 | Cone, Carrier (L/H) | Interchanges with Mack 25084763 | $54.30 | Add to Cart | |
| 11 | 64AX239 | Cup, Carrier (L/H) | Interchanges with Mack 25499708 | $75.87 | Add to Cart | |
| 12 | Gear, Bull | Click on following links for more info:. Gear Ratio Application Chart | Call for availability | |||
| 13 | Gear, Helical Pinion | Click on following links for more info:. Gear Ratio Application Chart | Call for availability | |||
| 14 | 3AX1742 | Screw, Carrier (5/8in-18 X 2-1/4in) | Sold as a 12-pack | $182.48 | Add to Cart | |
| 14 | 72KH23 | Screw, Carrier (5/8in-18 X 2-5/8in) | Interchanges with Mack 25097077. Sold as a 12-pack | $113.45 | Add to Cart | |
| 15 | 57KH311 | Helical Pinion | Interchanges with Mack 25502515 | $42.50 | Add to Cart | |
| 16 | 53KH3104 | Retainer, Assembly | New design. Includes (1) 64AX90 | $343.37 | Add to Cart | |
| 17 | 31AX92 | Pin, Lock | Interchanges with Mack 25501800, Navistar 1840591C1 | Call for availability | ||
| 18 | 56AX542 | O-Ring | Interchanges with Mack 21112781 | Call for availability | ||
| 19 | 62AX166 | Cone, Spur Pinion (R/H) | $47.55 | Add to Cart | ||
| 20 | 64AX90 | Cone, Spur Pinion (R/H) | Interchanges with Mack 25083439 | $32.13 | Add to Cart | |
| 21 | Shim | Call for availability | ||||
| 22 | 297KB124P1 | Clamp, Plate | Interchanges with Mack 25160769 | $19.11 | Add to Cart | |
| 23 | 51KH320P10 | Shim, Pinion Adjustment (.010in Thk) | Interchanges with Mack 21189002 | Call for availability | ||
| 23 | 51KH320P12 | Shim, Pinion Adjustment (.012in Thk) | Interchanges with Mack 21189004 | Call for availability | ||
| 23 | 51KH320P15 | Shim, Pinion Adjustment (.015in Thk) | Interchanges with Mack 21189006 | Call for availability | ||
| 24 | 89KB26 | Cup, Bearing | Interchanges with Mack 21170168 | $136.50 | Add to Cart | |
| 25 | 89KB27 | Cone, Spur Pinion (LH) | Interchanges with Mack 21170164 | $139.41 | Add to Cart | |
| 26 | 56AX608 | O-Ring, Cover (LH) (Plastic Cover) | Interchanges with Mack 20974222 | $22.74 | Add to Cart | |
| 26 | 56AX423 | O-Ring, Cover (LH) (Metal Cover) | Interchanges with Mack 25091747. Sold as a 10-pack | $56.53 | Add to Cart | |
| 27 | 84KH320A | (LH) (Metal) | Interchanges with Mack 84KH319 | $144.05 | Add to Cart | |
| 28 | 37AX7U | Washer | Interchanges with Mack 20704752. Sold as a 50-pack | $72.20 | Add to Cart | |
| 29 | 6AX1734 | Screw | Interchanges with Mack 25501123 | Call for availability | ||
| 30 | 35AX1251 | Washer, Bearing Cap | Interchanges with Mack 25173765. Sold as a 10-pack | $148.01 | Add to Cart | |
| 31 | 6AX773 | Screw, Bearing Cap (3/4in-10 X 5in) | Interchanges with Mack 25085987. Sold as a 5-pack | $19.00 | Add to Cart | |
| 32 | 6AX1737 | Screw (1/2in-13 X 1-1/2in) | Interchanges with Mack 25501155 | Call for availability | ||
| 33 | 31AX59 | Pin, Adjustment Lock | Interchanges with Mack 25500500. Sold as a 2-pack | $10.91 | Add to Cart | |
| 34 | 29AX5 | Pin, Cotter | Interchanges with Mack 25501432. Sold as a 50-pack | $111.50 | Add to Cart | |
| 35 | 49AX224 | Plug, Filler | (Magnetic) (Used with Metal Cover) (3/4 NPT). Interchanges with Mack 25095708 | $4.89 | Add to Cart | |
| 35 | 49AX309 | Plug, Filler (Used W/ Plastic Cover) | Interchanges with Mack 20953259 | Call for availability | ||
| 36 | 151KC123 | Key | Interchanges with Mack 25500376. Sold as a 5-pack | $74.00 | Add to Cart | |
| 37 | 21180685 | Housing, Carrier Assembly | Straddle Torque Rod Mount | Call for availability | ||
| 38 | 541KB29 | Breather | Interchanges with Mack 541KB16. Sold as a 5-pack | $62.87 | Add to Cart | |
| 39 | 21238597 | Spacer, Pinion | 3.38in OD x 2.88in ID x .721in Thick. Interchanges with Mack 52KH32P721 | Call for availability | ||
| 39 | 21238603 | Spacer, Pinion | 3.38in OD x 2.88in ID x .727in Thick. Interchanges with Mack 52KH32P727 | Call for availability | ||
| 39 | 21238612 | Spacer, Pinion | 3.38in OD x 2.88in ID x .736in Thick. Interchanges with Mack 52HK32P736 | Call for availability | ||
| 39 | 21238616 | Spacer, Pinion | 3.38in OD x 2.88in ID x .740in Thick. Interchanges with Mack 52KH32P740 | $49.42 | Add to Cart | |
| 40 | Differential Nest Kit | Kit, Nest | Includes (2) 34KH331, (4) 33KH263A, (2) 38KH218A, (4) 37KH27A, (1) 32KH228A | $831.75 | Add to Cart | |
| 40 | Differential Nest Kit | Kit, Nest (CRD150) | Includes (2) 34KH263, (4) 33KH263A, (2) 38KH220, (4) 37KH210, (1) 32KH228A | $1,044.12 | Add to Cart | |
| 41 | 21392162 | Assembly, Differential | Call for availability | |||
| 42 | 84KH51 | Kit, Cover | Includes (1) 84KH320A, (1) 56AX423. Interchanges with Mack 85136434 | $127.53 | Add to Cart | |
| 43 | 49AX73 | Plug (Magnetic 1/2NPT) | Interchanges with Mack 25499271. Sold as a 5-pack | $28.51 | Add to Cart | |
| 44 | 30KH519 | Case (L/H) | Case with 22spline Hub used with PAP808096 Sliding Clutch | $965.53 | Add to Cart | |
| 45 | 3AX1803X | Screw | Interchanges with Mack 25093516. Sold as a 5-pack | $41.58 | Add to Cart | |
| 46 | 24KH21 | Set, Gear (3.40, 3.56, 3.79, 3.98, 4.19 Ratio) (19/23 T) | Interchanges with Mack 21130772 | $1,471.85 | Add to Cart | |
| 46 | 21130919 | Set, Gear (4.50, 4.80, 5.04, 5.31, 5.66 Ratio) (15/23 T) | $1,265.81 | Add to Cart | ||
| 46 | 21130954 | Set, Gear (3.11, 3.25 Ratio) (19/21 T) | $3,419.94 | Add to Cart | ||
| 47 | 50KH319 | Gasket | Interchanges with Mack 20706312 | Call for availability | ||
| 48 | 561KC211 | Seal | Interchanges with Mack 21136471 | Call for availability | ||
| 49 | 50KH252P1 | Gasket | Sold as a 10-pack | $34.10 | Add to Cart | |
| 51 | 25501162 | Bolt | Call for availability | |||
| 52 | 89KB25 | Cone, Bearing (23 Rollers) | Interchanges with Mack 21170161 | $88.42 | Add to Cart | |
| 53 | 64AX276 | Cup | Interchanges with Mack 25107704 | $32.95 | Add to Cart | |
| 54 | 89KB24 | Cup | Interchanges with Mack 21170166 | $136.50 | Add to Cart | |
| 55 | 89KB27 | Cone, Bearing (21 Rollers) | Interchanges with Mack 21170164 | $139.41 | Add to Cart | |
| 56 | 48KH428 | Housing, Pinion | Includes (1) 89KB24, (1) 64AX276. Interchanges with Mack 21136169 | $465.43 | Add to Cart | |
| 57 | 51KH321P10 | Shim | Interchanges with Mack 21166924. Sold as a 5-pack | $253.69 | Add to Cart | |
| 57 | 51KH321P12 | Shim | Interchanges with Mack 21166925. Sold as a 5-pack | $258.39 | Add to Cart | |
| 57 | 51KH321P15 | Shim | Interchanges with Mack 21166926. Sold as a 5-pack | $284.63 | Add to Cart | |
| 58 | 561KC210 | O-Ring | Interchanges with Mack 21219342 | Call for availability | ||
| 59 | 32QJ35 | Seal, Oil | Interchanges with Mack 21126859 | $111.94 | Add to Cart | |
| 60 | 267KC237 | Nut, Retainer | Interchanges with Mack 21187820 | $146.12 | Add to Cart | |
| 61 | Mack Bearing and Seal Kit | Kit, Bearing | Includes (1) 64AX90, (1) 89KB26, (1) 89KB24, (1) 62AX166, (2) 89KB27, (1) 64AX267, (1) 62AX471, (1) 64AX303, (1) 89KB25, (1) 64AX276, (1) 62AX404, (1) 64AX239 | $1,298.52 | Add to Cart | |
| 62 | Kit, Gasket & Seal | New design. Includes (1) 50KH252P1, (1) 56AX608, (1) 56AX423, (1) 969397, (1) 32QJ35 | Call for availability |
CRD 151 - Assembly
Click a number on the diagram to highlight that part below.
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 1 | 97KH32 | Clutch, Gear | Interchanges with Mack 20841349 | $250.72 | Add to Cart | |
| 2 | 98KH41 | Clutch, Fork | Interchanges with Mack 20841506 | $247.12 | Add to Cart | |
| 3 | 551KC220 | Screw, Set (5/16 X 1-1/8in, 12pt Head) | Interchanges with Mack 21322639. Sold as a 4-pack | $32.01 | Add to Cart | |
| 4 | 93KH41 | Piston, Rod | Interchanges with Mack 20841552 | $57.68 | Add to Cart | |
| 5 | 561KC27 | Wear, Ring | Interchanges with Mack 21181243 | $44.93 | Add to Cart | |
| 6 | 96KH22 | Spring, Interlock | Interchanges with Mack 20895802 | $64.94 | Add to Cart | |
| 7 | 37AX98 | Washer | Interchanges with Mack 25091685 | Call for availability | ||
| 8 | 561KC29 | O-Ring | Interchanges with Mack 21219337, Cummins 43696A | Call for availability | ||
| 10 | 969397 | O-Ring | Sold as a 5-pack | $25.91 | Add to Cart | |
| 11 | 36AX22 | Washer | Interchanges with Mack 20705946 | $1.12 | Add to Cart | |
| 12 | 4AX99 | Screw | Interchanges with Mack 20704710 | Call for availability | ||
| 13 | 1MR3612M | Switch | Interchanges with Mack 21440625 | $38.46 | Add to Cart |
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This is the illustrated parts breakdown for the Mack CRD 151 Differential, with every part in these diagrams matched to our live inventory. We stock 62 of the 88 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.
More Mack parts manuals: Mack Transmission Parts Manuals · Mack Differential Parts Manuals