2003 Hummer H1 Drivetrain Parts

This table covers the Axle bolts. Read more

One part is listed for the 2003 Hummer H1 — USA STANDARD GEAR USA33181.

This table covers the Axle Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

This group shows a single part: TIMKEN 207.

This table covers the seals where an axle shaft exits the housing. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 2003 Hummer H1 — USA STANDARD GEAR USA30175.

This table covers the carriers that hold the differential gears in the axle. Read more

One part is listed for the 2003 Hummer H1 — DANA DS27217.

This table covers the bearings and races that support the differential carrier. Read more

7 Differential Carrier Bearing / Race parts are listed for the 2003 Hummer H1, from SCHAEFFLER, WJB / INMOTION PARTS, ACDELCO and 2 other brands. WJB / INMOTION PARTS WTA36 carries the "Popular" badge.

In the Economy grade, WJB / INMOTION PARTS supplies 1 part: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WTA36.

The Standard Replacement section lists 6 options from SCHAEFFLER, ACDELCO, BCA and 1 other brand — built to original-equipment specification. ACDELCO A36 is listed in this group.

Part numbers include WJB / INMOTION PARTS WTA36, ACDELCO A36 and BCA NBA36, among others listed above.

This table covers the Differential Carrier shims. Read more

2 Differential Carrier Shim parts for the 2003 Hummer H1 come from 2 brands — MOTIVE GEAR and USA STANDARD GEAR.

This group includes MOTIVE GEAR 1130 and USA STANDARD GEAR USA55010.

This table covers the clutch packs in a limited-slip or locking differential. Read more

USA STANDARD GEAR supplies both parts for the 2003 Hummer H1.

This group includes USA STANDARD GEAR USA16148 and USA STANDARD GEAR USA16165.

This table covers the Differential covers. Read more

2 Differential Cover parts for the 2003 Hummer H1 come from USA STANDARD GEAR.

Listed part numbers: USA STANDARD GEAR USA32019 and USA STANDARD GEAR USA32031.

This table covers the Differential Cover bolts. Read more

2 Differential Cover Bolt parts are listed for the 2003 Hummer H1, from DANA and USA STANDARD GEAR.

Part numbers include DANA 34279 and USA STANDARD GEAR USA33286.

This table covers the gaskets that seal the Differential Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

5 Differential Cover Gasket parts are listed for the 2003 Hummer H1, from FEL-PRO, MAHLE / CLEVITE, MOTIVE GEAR and 2 other brands. FEL-PRO RDS13889 carries the "Popular" badge.

This group includes FEL-PRO RDS13889, MAHLE / CLEVITE P37830 and MOTIVE GEAR 5120 and the remaining parts above.

This table covers the Differential Cross pins. Read more

3 Differential Cross Pin parts for the 2003 Hummer H1 come from USA STANDARD GEAR.

This group includes USA STANDARD GEAR USA33334, USA STANDARD GEAR USA33332 and USA STANDARD GEAR SLXPM20.

This table covers the Differential Crush sleeves. Read more

This group shows a single part: USA STANDARD GEAR USA33085.

This table covers the Differential Gear Installation kits. Read more

2 Differential Gear Installation Kit parts for the 2003 Hummer H1 come from 2 brands — MOTIVE GEAR and USA STANDARD GEAR.

Listed part numbers: MOTIVE GEAR AM20IK and USA STANDARD GEAR USA12066.

This table covers the Differential Lock springs. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats. Read more

One part is listed for the 2003 Hummer H1 — USA STANDARD GEAR SLSPRINGSM.

This table covers the bearings and races on the differential pinion. Read more

23 Differential Pinion Bearing / Race parts for the 2003 Hummer H1 come from 8 brands — BCA, WJB / INMOTION PARTS, TIMKEN and 5 other brands. The "Popular" part is WJB / INMOTION PARTS WTM88048.

The Economy section: 9 options from WJB / INMOTION PARTS, FAMOUS BRAND and ULTRA-POWER. WJB / INMOTION PARTS WTM88048 is listed in this group.

Standard Replacement: 14 parts, from BCA, TIMKEN, MOTIVE GEAR and 2 other brands. A representative part number is TIMKEN M88010.

This table covers the baffles that control oil at the pinion bearings. Read more

3 Differential Pinion Bearing Baffle parts for the 2003 Hummer H1 come from 2 brands — MOTIVE GEAR and RICHMOND.

This group includes MOTIVE GEAR 4105, MOTIVE GEAR 4104 and RICHMOND 0400111.

This table covers the Differential Pinion nuts. Read more

2 Differential Pinion Nut parts are listed for the 2003 Hummer H1, from MOTIVE GEAR and USA STANDARD GEAR.

This group includes MOTIVE GEAR 379570S and USA STANDARD GEAR USA33146.

This table covers the wear sleeves used to restore a grooved pinion seal surface. Read more

One part is listed for the 2003 Hummer H1 — NATIONAL 99193.

This table covers the seals at the differential pinion yoke. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

5 Differential Pinion Seal parts are listed for the 2003 Hummer H1, from DANA, MOTIVE GEAR, NATIONAL and 2 other brands. DANA 43085 carries the "Popular" badge.

This group includes DANA 43085, MOTIVE GEAR 470331N and NATIONAL 714675 and the remaining parts above.

This table covers the Differential Pinion Shaft Lock bolts. Read more

This group shows a single part: MOTIVE GEAR 305105S.

This table covers the Differential Pinion shims. Read more

2 Differential Pinion Shim parts are listed for the 2003 Hummer H1, from MOTIVE GEAR and USA STANDARD GEAR.

Listed part numbers: MOTIVE GEAR 1127 and USA STANDARD GEAR USA55009.

This table covers kits that group the bearings, races and seals for a differential rebuild. Read more

10 Differential Rebuild Kit parts for the 2003 Hummer H1 come from 3 brands — MOTIVE GEAR, USA STANDARD GEAR and RICHMOND. The "Popular" part is RICHMOND XL10541.

The Master Kit section lists 6 options from RICHMOND, MOTIVE GEAR and USA STANDARD GEAR — grouped under the catalog's "Master Kit" designation — the notes column spells out what sets them apart. RICHMOND XL10541 is listed in this group.

In the Standard Kit grade, MOTIVE GEAR and USA STANDARD GEAR supply 4 parts: grouped under the catalog's "Standard Kit" designation — the notes column spells out what sets them apart. A representative part number is MOTIVE GEAR R20RT.

This table covers the ring-and-pinion gear sets that set the axle ratio. Read more

3 Differential Ring and Pinion parts are listed for the 2003 Hummer H1, from RICHMOND, MOTIVE GEAR and USA STANDARD GEAR.

Economy: 1 part, from RICHMOND. A representative part number is RICHMOND AM20.

The Standard Replacement section: 2 options from MOTIVE GEAR and USA STANDARD GEAR. MOTIVE GEAR AM20 is listed in this group.

Listed part numbers: RICHMOND AM20 and USA STANDARD GEAR ZGM20, plus the other parts above.

This table covers the Differential Ring Gear bolts. Read more

4 Differential Ring Gear Bolt parts are listed for the 2003 Hummer H1, from MOTIVE GEAR, DANA and USA STANDARD GEAR.

Listed part numbers: DANA 45784, MOTIVE GEAR D8OZ4216B and MOTIVE GEAR 68003554AA, plus the other parts above.

This table covers the Differential Spider gears. Read more

2 Differential Spider Gear parts are listed for the 2003 Hummer H1, from MOTIVE GEAR and USA STANDARD GEAR.

Part numbers include MOTIVE GEAR 8127092 and USA STANDARD GEAR USA16126.

This table covers the spools that lock the differential side gears together. Read more

4 Differential Spool parts for the 2003 Hummer H1 come from 2 brands — USA STANDARD GEAR and DANA.

Listed part numbers: DANA 2022500, USA STANDARD GEAR ZPFSM20329 and USA STANDARD GEAR USA32049, plus the other parts above.

This table covers the Differential washers. Read more

4 Differential Washer parts are listed for the 2003 Hummer H1, from MOTIVE GEAR and USA STANDARD GEAR.

Listed part numbers: MOTIVE GEAR C9OZ4230A, MOTIVE GEAR C9OZ4228A and USA STANDARD GEAR USA33283, plus the other parts above.

This table covers the Drive Shaft End yokes. Read more

USA STANDARD GEAR supplies the 4 Drive Shaft End Yoke parts for the 2003 Hummer H1.

The Strap Style (Easier to Install) section lists 2 options from USA STANDARD GEAR — grouped under the catalog's "Strap Style (Easier to Install)" designation — the notes column spells out what sets them apart. USA STANDARD GEAR USA41095 is listed in this group.

The U-Bolt Style (Stronger) section lists 2 options from USA STANDARD GEAR — grouped under the catalog's "U-Bolt Style (Stronger)" designation — the notes column spells out what sets them apart. USA STANDARD GEAR USA41096 is listed in this group.

This group includes USA STANDARD GEAR USA41095, USA STANDARD GEAR USA41097 and USA STANDARD GEAR USA41096 and the remaining parts above.

This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle. Read more

19 Gear Oil parts are listed for the 2003 Hummer H1, from VALVOLINE, LUCAS OIL, ACDELCO and 1 other brand. VALVOLINE VV820 carries the "Popular" badge.

In the SAE 75W-90 grade, VALVOLINE, LUCAS OIL and ACDELCO supply 11 parts: grouped under the catalog's "SAE 75W-90" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE VV820.

In the SAE 80W-90 grade, VALVOLINE and LUCAS OIL supply 7 parts: grouped under the catalog's "SAE 80W-90" designation — the notes column spells out what sets them apart. A representative part number is LUCAS OIL 10043.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This table covers the Gear Oil additives. Read more

One part is listed for the 2003 Hummer H1 — USA STANDARD GEAR USA15018.

This table covers the Set Up bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

One part is listed for the 2003 Hummer H1 — USA STANDARD GEAR USA56045.

This table covers the TracLoc Assembly tools. This is a service tool, not a wear part — match the application in the notes. Read more

This group shows a single part: USA STANDARD GEAR USA56049.

This table covers the chains that drive the transfer case. Read more

This group shows a single part: USA STANDARD GEAR ZTCHHV025.

This table covers the fluids specified for the transfer case. Typical signs include discolored fluid, a burnt smell, or a level that keeps dropping. Use only the specification in the notes — the tables group grades because they are not interchangeable. Read more

16 Transfer Case Fluid parts are listed for the 2003 Hummer H1, from VALVOLINE, ACDELCO and IDEMITSU. ACDELCO 109243 carries the "Popular" badge.

In the Dexron grade, VALVOLINE and ACDELCO supply 6 parts: grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO 109243.

In the Mercon grade, VALVOLINE supplies 1 part: grouped under the catalog's "Mercon" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE 822345.

In the Multi-Vehicle grade, VALVOLINE supplies 4 parts: grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE VV3246.

In the Type III (H) grade, ACDELCO supplies 2 parts: grouped under the catalog's "Type III (H)" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO 109240.

In the Type T-4 (Type T-IV) grade, IDEMITSU supplies 2 parts: grouped under the catalog's "Type T-4 (Type T-IV)" designation — the notes column spells out what sets them apart. A representative part number is IDEMITSU 30040093750.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This table covers the Transfer Case Input Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

3 Transfer Case Input Shaft Bearing parts are listed for the 2003 Hummer H1, from BCA, NATIONAL and WJB / INMOTION PARTS.

Listed part numbers: BCA NB110L, NATIONAL 110L and WJB / INMOTION PARTS RB6010NR.

This table covers the Transfer Case Input Shaft Pilot bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

2 Transfer Case Input Shaft Pilot Bearing parts are listed for the 2003 Hummer H1, from NATIONAL and WJB / INMOTION PARTS.

Listed part numbers: NATIONAL FC66561 and WJB / INMOTION PARTS WRFC66561.

This table covers the wear sleeves used to restore a Transfer Case Input Shaft seal surface. Read more

2 Transfer Case Input Shaft Repair Sleeve parts for the 2003 Hummer H1 come from 2 brands — SCHAEFFLER and WJB / INMOTION PARTS.

This group includes SCHAEFFLER SR3509 and WJB / INMOTION PARTS WS99193.

This table covers the seals at the Transfer Case Input Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

6 Transfer Case Input Shaft Seal parts for the 2003 Hummer H1 come from 3 brands — NATIONAL, BCA and WJB / INMOTION PARTS. The "Popular" part is NATIONAL 710928.

Listed part numbers: NATIONAL 710928, NATIONAL 3173 and BCA NS710928, plus the other parts above.

This table covers the Transfer Case Low Gear Roller bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

This group shows a single part: PIONEER 764014.

This table covers the wear sleeves used to restore a Transfer Case Oil Pump Housing seal surface. Read more

3 Transfer Case Oil Pump Housing Repair Sleeve parts are listed for the 2003 Hummer H1, from BCA, NATIONAL and WJB / INMOTION PARTS.

Listed part numbers: BCA NS99225, NATIONAL 99225 and WJB / INMOTION PARTS WS99225.

This table covers the Transfer Case Output Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

8 Transfer Case Output Shaft Bearing parts for the 2003 Hummer H1 come from 5 brands — WJB / INMOTION PARTS, BCA, NATIONAL and 2 other brands. The "Popular" part is WJB / INMOTION PARTS RB6207.

The Economy section: 2 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS RB6207 is listed in this group.

Standard Replacement: 5 parts, from BCA, NATIONAL and TIMKEN. A representative part number is TIMKEN 207.

1 further part sits outside the graded sections, with the same engine-level match.

This group includes WJB / INMOTION PARTS RB6207, WJB / INMOTION PARTS RB6206 and TIMKEN 207 and the remaining parts above.

This table covers the Transfer Case Output Shaft Pilot bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

5 Transfer Case Output Shaft Pilot Bearing parts for the 2003 Hummer H1 come from 5 brands — NATIONAL, BCA, SCHAEFFLER and 2 other brands. The "Popular" part is NATIONAL J2416.

This group includes NATIONAL J2416, BCA NBJ2416 and SCHAEFFLER B2416 and the remaining parts above.

This table covers the wear sleeves used to restore a Transfer Case Output Shaft seal surface. Read more

7 Transfer Case Output Shaft Repair Sleeve parts are listed for the 2003 Hummer H1, from NATIONAL, WJB / INMOTION PARTS, BCA and 2 other brands. BCA NS88187 carries the "Popular" badge.

Listed part numbers: BCA NS88187, NATIONAL 99187 and NATIONAL 99210, plus the other parts above.

This table covers the seals at the Transfer Case Output Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

8 Transfer Case Output Shaft Seal parts are listed for the 2003 Hummer H1, from NATIONAL, SCHAEFFLER, WJB / INMOTION PARTS and 2 other brands. NATIONAL 3946 carries the "Popular" badge.

This group includes NATIONAL 3946 and BCA NS710663 and the remaining parts above.

This table covers the Transfer Case Overhaul kits. Read more

One part is listed for the 2003 Hummer H1 — SKF STCK242AA.