1998 Hummer H1 Drivetrain Parts

This table covers the actuators that engage four-wheel drive at the transfer case or axle. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

This group shows a single part: AAM 40007173.

This table covers the Axle Intermediate 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

One part is listed for the 1998 Hummer H1 — AAM 26041516.

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 complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes. Read more

5 CV Axle parts are listed for the 1998 Hummer H1, from GSP and TOP NOTCH. GSP NCV82999 carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

Listed part numbers: GSP NCV82999, GSP NCV82074 and GSP NCV82075, plus the other parts above.

This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn. Read more

DORMAN supplies the 3 CV Joint Boot parts for the 1998 Hummer H1. All of them fit every engine offered in the 1998 H1.

This group includes DORMAN 614001, DORMAN 614003 and DORMAN 614700.

This table covers the adjusters that set differential bearing preload. Read more

One part is listed for the 1998 Hummer H1 — AAM 26045211.

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

3 Differential Carrier parts are listed for the 1998 Hummer H1, from AAM and DANA. All of them fit every engine offered in the 1998 H1.

Part numbers include AAM 14012695, AAM 40035046 and DANA DS27217.

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

12 Differential Carrier Bearing / Race parts are listed for the 1998 Hummer H1, from SCHAEFFLER, SKF, WJB / INMOTION PARTS and 4 other brands. WJB / INMOTION PARTS WTA36 carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

In the Economy grade, WJB / INMOTION PARTS supplies 2 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WTA36.

The Standard Replacement section lists 10 options from SCHAEFFLER, SKF, ACDELCO and 3 other brands — built to original-equipment specification. ACDELCO A36 is listed in this group.

This table covers the Differential Carrier shims. Read more

This group shows a single part: MOTIVE GEAR 1130.

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

4 Differential Cover Gasket parts are listed for the 1998 Hummer H1, from FEL-PRO, MAHLE / CLEVITE, MOTIVE GEAR and 1 other brand. All of them fit every engine offered in the 1998 H1.

Listed part numbers: FEL-PRO RDS13889, MAHLE / CLEVITE P37830 and MOTIVE GEAR 5120, plus the other parts above.

This table covers the Differential Crush sleeves. Read more

This group shows a single part: AAM 14012691.

This table covers the Differential Gear Installation kits. Read more

This group shows a single part: MOTIVE GEAR AM20IK.

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

28 Differential Pinion Bearing / Race parts for the 1998 Hummer H1 come from 7 brands — SKF, BCA, SCHAEFFLER and 4 other brands. The "Popular" part is WJB / INMOTION PARTS WTM88048. Economy and Standard Replacement are all represented, and Standard Replacement alone accounts for 19 parts.

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

3 Differential Pinion Bearing Baffle parts for the 1998 Hummer H1 come from 2 brands — MOTIVE GEAR and RICHMOND. Every part fits both the 6.5L V8 DIESEL and the 6.5L V8 DIESEL Turbocharged.

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

This table covers the flanges that connect the driveshaft to the differential pinion. Read more

One part is listed for the 1998 Hummer H1 — AAM 40025925.

This table covers the Differential Pinion nuts. Read more

One part is listed for the 1998 Hummer H1 — MOTIVE GEAR 379570S.

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

One part is listed for the 1998 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 1998 Hummer H1, from WJB / INMOTION PARTS, BCA, NATIONAL and 2 other brands. WJB / INMOTION PARTS WS470331N carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

Part numbers include WJB / INMOTION PARTS WS470331N, BCA NS470331N and NATIONAL 470331N, among others listed above.

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

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

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

3 Differential Rebuild Kit parts for the 1998 Hummer H1 come from 3 brands — AAM, MOTIVE GEAR and TIMKEN. Every part fits both the 6.5L V8 DIESEL and the 6.5L V8 DIESEL Turbocharged.

This group includes AAM 74067005, MOTIVE GEAR R20RH and TIMKEN DRK311J.

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

7 Differential Ring and Pinion parts are listed for the 1998 Hummer H1, from AAM, RICHMOND, MOTIVE GEAR and 1 other brand. MOTIVE GEAR AM20 carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

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

The Standard Replacement section: 6 options from AAM, MOTIVE GEAR and USA STANDARD GEAR. MOTIVE GEAR AM20 is listed in this group.

Part numbers include MOTIVE GEAR AM20 and AAM 40058536, among others listed above.

This table covers the Differential Ring Gear bolts. Read more

2 Differential Ring Gear Bolt parts are listed for the 1998 Hummer H1, from AAM and MOTIVE GEAR. All of them fit every engine offered in the 1998 H1.

This group includes AAM 14012703 and MOTIVE GEAR D8OZ4216B.

This table covers the Differential Spider gears. Read more

2 Differential Spider Gear parts are listed for the 1998 Hummer H1, from AAM and MOTIVE GEAR. All of them fit every engine offered in the 1998 H1.

Listed part numbers: AAM 74047037 and MOTIVE GEAR 8127092.

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

This group shows a single part: DANA 2022500.

This table covers the Differential washers. Read more

MOTIVE GEAR supplies both parts for the 1998 Hummer H1. All of them fit every engine offered in the 1998 H1.

Listed part numbers: MOTIVE GEAR C9OZ4230A and MOTIVE GEAR C9OZ4228A.

This table covers the Drive Shaft Center Support bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

2 Drive Shaft Center Support Bushing parts for the 1998 Hummer H1 come from 2 brands — ATP and PIONEER. Every part fits both the 6.5L V8 DIESEL and the 6.5L V8 DIESEL Turbocharged.

Part numbers include ATP JB51 and PIONEER 755068.

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

18 Gear Oil parts are listed for the 1998 Hummer H1, from VALVOLINE, LUCAS OIL and ACDELCO. VALVOLINE VV820 carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

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.

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

14 Transfer Case Fluid parts are listed for the 1998 Hummer H1, from VALVOLINE and ACDELCO. ACDELCO 109243 carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

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.

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

5 Transfer Case Input Shaft Bearing parts are listed for the 1998 Hummer H1, from NATIONAL, BCA, SKF and 2 other brands. NATIONAL 110L carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

Part numbers include NATIONAL 110L, BCA NB110L and SKF 6010NRJ, among others listed above.

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 1998 Hummer H1, from NATIONAL and WJB / INMOTION PARTS. All of them fit every engine offered in the 1998 H1.

This group includes 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

4 Transfer Case Input Shaft Repair Sleeve parts for the 1998 Hummer H1 come from 4 brands — SCHAEFFLER, SKF, TIMKEN and 1 other brand. Every part fits both the 6.5L V8 DIESEL and the 6.5L V8 DIESEL Turbocharged.

Listed part numbers: SCHAEFFLER SR3509, SKF 99193 and TIMKEN KWK99193, plus the other parts above.

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

10 Transfer Case Input Shaft Seal parts for the 1998 Hummer H1 come from 6 brands — SKF, BCA, TIMKEN and 3 other brands. The "Popular" part is NATIONAL 710928. Every part fits both the 6.5L V8 DIESEL and the 6.5L V8 DIESEL Turbocharged.

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

5 Transfer Case Oil Pump Housing Repair Sleeve parts are listed for the 1998 Hummer H1, from NATIONAL, BCA, SKF and 2 other brands. NATIONAL 99225 carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

Part numbers include NATIONAL 99225 and BCA NS99225, among others listed above.

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

12 Transfer Case Output Shaft Bearing parts for the 1998 Hummer H1 come from 6 brands — WJB / INMOTION PARTS, TIMKEN, BCA and 3 other brands. The "Popular" part is WJB / INMOTION PARTS RB6207. Every part fits both the 6.5L V8 DIESEL and the 6.5L V8 DIESEL Turbocharged.

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

Standard Replacement: 10 parts, from TIMKEN, BCA, NATIONAL and 2 other brands. A representative part number is TIMKEN 207.

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 1998 Hummer H1 come from 5 brands — NATIONAL, BCA, SKF and 2 other brands. The "Popular" part is NATIONAL J2416. Every part fits both the 6.5L V8 DIESEL and the 6.5L V8 DIESEL Turbocharged.

This group includes NATIONAL J2416 and BCA NBJ2416 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 1998 Hummer H1, from NATIONAL, WJB / INMOTION PARTS, BCA and 2 other brands. BCA NS88187 carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

Part numbers include BCA NS88187, NATIONAL 99187 and NATIONAL 99210, among others listed 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

9 Transfer Case Output Shaft Seal parts are listed for the 1998 Hummer H1, from SCHAEFFLER, NATIONAL, WJB / INMOTION PARTS and 2 other brands. NATIONAL 3946 carries the "Popular" badge. All of them fit every engine offered in the 1998 H1.

Part numbers include NATIONAL 3946 and NATIONAL 710663, among others listed above.

This table covers the Transfer Case Overhaul kits. Read more

One part is listed for the 1998 Hummer H1 — SKF STCK242AA.