2021 Chevrolet Express 3500 Drivetrain Parts

This table covers the Axle / Differential assemblies. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Express 3500.

Listed part numbers: GM GENUINE 84447463 and GM GENUINE 84596523.

This table covers the Axle bolts. Read more

2 Axle Bolt parts for the 2021 Chevrolet Express 3500 come from 2 brands — AAM and GM GENUINE.

Listed part numbers: AAM 40023476 and GM GENUINE 20920619.

This table covers the Axle bumpers. Read more

2 Axle Bumper parts for the 2021 Chevrolet Express 3500 come from GM GENUINE.

Listed part numbers: GM GENUINE 06263975 and GM GENUINE 23138214.

This table covers the Axle Hub keys. Read more

One part is listed for the 2021 Chevrolet Express 3500 — GM GENUINE 22760462.

This table covers the Axle shafts. Read more

5 Axle Shaft parts are listed for the 2021 Chevrolet Express 3500, from DORMAN, RICHMOND, AAM and 2 other brands. AAM 40054774 carries the "Popular" badge.

In the Economy grade, DORMAN and RICHMOND supply 2 parts: the catalog's value-priced group. A representative part number is DORMAN 630325.

The Standard Replacement section lists 3 options from AAM, GM GENUINE and USA STANDARD GEAR — built to original-equipment specification. AAM 40054774 is listed in this group.

Listed part numbers: AAM 40054774, DORMAN 630325 and RICHMOND 9225174, plus the other parts above.

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

One part is listed for the 2021 Chevrolet Express 3500 — GM GENUINE S606.

This table covers the gaskets that seal the Axle Shaft Flange. 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

3 Axle Shaft Flange Gasket parts are listed for the 2021 Chevrolet Express 3500, from DORMAN, FEL-PRO and GM GENUINE.

Part numbers include DORMAN 926900, FEL-PRO 55350 and GM GENUINE 12471641.

This table covers the Axle Shaft retainers and clips. Read more

2 Axle Shaft Retainer / Clip parts for the 2021 Chevrolet Express 3500 come from 2 brands — DORMAN and GM GENUINE.

This group includes DORMAN 13851 and GM GENUINE 14012746.

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

3 Axle Shaft Seal parts for the 2021 Chevrolet Express 3500 come from 3 brands — AAM, GM GENUINE and TIMKEN.

Listed part numbers: AAM 20889025, GM GENUINE 291316 and TIMKEN 710105.

This table covers the Axle Vent valves. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

This group shows a single part: GM GENUINE 26063647.

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

3 CV Joint Boot parts for the 2021 Chevrolet Express 3500 come from 2 brands — GM GENUINE and AAM.

Listed part numbers: AAM 40215887, GM GENUINE 15898093 and GM GENUINE 23126611.

This table covers the Differential Bearing Adjuster Nut Lock bolts. Read more

One part is listed for the 2021 Chevrolet Express 3500 — GM GENUINE 11603333.

This table covers the Differential Bearing retainers. Read more

2 Differential Bearing Retainer parts for the 2021 Chevrolet Express 3500 come from 2 brands — AAM and GM GENUINE.

This group includes AAM 26061404 and the remaining parts above.

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

7 Differential Carrier parts for the 2021 Chevrolet Express 3500 come from 3 brands — AAM, GM GENUINE and USA STANDARD GEAR. The "Popular" part is AAM 40090728.

In the Heavy Duty grade, USA STANDARD GEAR supplies 1 part: rated for severe service. A representative part number is USA STANDARD GEAR USA26030.

Standard Replacement: 6 parts, from AAM and GM GENUINE. A representative part number is AAM 40090728.

Part numbers include AAM 40090728, USA STANDARD GEAR USA26030 and AAM 14012695, among others listed above.

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

3 Differential Carrier Bearing / Race parts for the 2021 Chevrolet Express 3500 come from GM GENUINE.

Part numbers include GM GENUINE 84678054, GM GENUINE S1420 and GM GENUINE 387AS382A.

This table covers the Differential Carrier shims. Read more

GM GENUINE supplies the 4 Differential Carrier Shim parts for the 2021 Chevrolet Express 3500.

Part numbers include GM GENUINE 15599629, GM GENUINE 22835276 and GM GENUINE 15599633, among others listed above.

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

4 Differential Clutch Pack parts for the 2021 Chevrolet Express 3500 come from GM GENUINE.

This group includes GM GENUINE 23404635, GM GENUINE 12479063 and GM GENUINE 12479064 and the remaining parts above.

This table covers the Differential Clutch Pack clips. Read more

3 Differential Clutch Pack Clip parts for the 2021 Chevrolet Express 3500 come from GM GENUINE.

This group includes GM GENUINE 15599623, GM GENUINE 00462787 and GM GENUINE 12471533.

This table covers the Differential covers. Read more

4 Differential Cover parts are listed for the 2021 Chevrolet Express 3500, from AAM and GM GENUINE.

This group includes AAM 26067040, AAM 40060164 and GM GENUINE 22951487 and the remaining parts above.

This table covers the Differential Cover bolts. Read more

6 Differential Cover Bolt parts for the 2021 Chevrolet Express 3500 come from 2 brands — GM GENUINE and AAM. The "Popular" part is GM GENUINE 11546347.

This group includes GM GENUINE 11546347, GM GENUINE 12471307 and AAM 40019486 and the remaining parts above.

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 for the 2021 Chevrolet Express 3500 come from 4 brands — GM GENUINE, AAM, DORMAN and 1 other brand. The "Popular" part is GM GENUINE 85720902.

Listed part numbers: GM GENUINE 85720902, AAM 40270026 and DORMAN 926052, plus the other parts above.

This table covers the Differential Cross pins. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Express 3500.

Listed part numbers: GM GENUINE 22950866 and GM GENUINE 20768565.

This table covers the Differential Crush sleeves. Read more

AAM supplies the 3 Differential Crush Sleeve parts for the 2021 Chevrolet Express 3500.

This group includes AAM 26008741, AAM 14012691 and AAM 40099601.

This table covers the Differential Fill drain plugs. Read more

3 Differential Fill / Drain Plug parts for the 2021 Chevrolet Express 3500 come from 2 brands — GM GENUINE and AAM.

This group includes AAM 40007601, GM GENUINE 55573646 and GM GENUINE 24045309.

This table covers the Differential Lock actuators. 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

2 Differential Lock Actuator parts for the 2021 Chevrolet Express 3500 come from GM GENUINE.

This group includes GM GENUINE 14022135 and GM GENUINE 12471530.

This table covers the Differential Lock plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

One part is listed for the 2021 Chevrolet Express 3500 — GM GENUINE 12471412.

This table covers the thrust blocks in a locking differential. Read more

5 Differential Lock Thrust Block parts for the 2021 Chevrolet Express 3500 come from GM GENUINE.

This group includes GM GENUINE 12479067, GM GENUINE 12479069 and GM GENUINE 12479070 and the remaining parts above.

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

12 Differential Pinion Bearing / Race parts are listed for the 2021 Chevrolet Express 3500, from TIMKEN, GM GENUINE and NATIONAL. TIMKEN HM88510 carries the "Popular" badge.

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

GM GENUINE supplies both parts for the 2021 Chevrolet Express 3500.

This group includes GM GENUINE 22943114 and GM GENUINE 26008741.

This table covers the Differential Pinion Bearing bolts. Read more

This group shows a single part: AAM 40018119.

This table covers the Differential Pinion nuts. Read more

6 Differential Pinion Nut parts for the 2021 Chevrolet Express 3500 come from 2 brands — GM GENUINE and AAM. The "Popular" part is GM GENUINE 84489150.

Listed part numbers: GM GENUINE 84489150, GM GENUINE 88891763 and AAM 15552844, plus the other parts above.

This table covers the Differential Pinion 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 Differential Pinion Pilot Bearing parts are listed for the 2021 Chevrolet Express 3500, from AAM and GM GENUINE.

Part numbers include AAM 7451870 and GM GENUINE 1581TS.

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

2 Differential Pinion Repair Sleeve parts for the 2021 Chevrolet Express 3500 come from AAM.

Part numbers include AAM 26060977 and AAM 26060975.

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 for the 2021 Chevrolet Express 3500 come from 4 brands — GM GENUINE, MOTIVE GEAR, SKF and 1 other brand. The "Popular" part is GM GENUINE 26064030.

Listed part numbers: GM GENUINE 26064030 and GM GENUINE 86285709, plus the other parts above.

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

One part is listed for the 2021 Chevrolet Express 3500 — GM GENUINE 11546644.

This table covers the Differential Pinion shims. Read more

5 Differential Pinion Shim parts for the 2021 Chevrolet Express 3500 come from GM GENUINE.

Part numbers include GM GENUINE 00334363, GM GENUINE 00334364 and GM GENUINE 00334367, among others listed above.

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

9 Differential Rebuild Kit parts are listed for the 2021 Chevrolet Express 3500, from MOTIVE GEAR, BCA, LUK and 1 other brand. MOTIVE GEAR R95GRLAMK carries the "Popular" badge.

In the Master Kit grade, MOTIVE GEAR, BCA and LUK supply 4 parts: grouped under the catalog's "Master Kit" designation — the notes column spells out what sets them apart. A representative part number is MOTIVE GEAR R95GRLAMK.

The Standard Kit section lists 5 options from MOTIVE GEAR, AAM, BCA and 1 other brand — grouped under the catalog's "Standard Kit" designation — the notes column spells out what sets them apart. AAM 74067009 is listed in this group.

This group includes MOTIVE GEAR R95GRLAMK, MOTIVE GEAR R95GRLAMKT and BCA NBDRK324EMK and the remaining parts above.

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

8 Differential Ring and Pinion parts for the 2021 Chevrolet Express 3500 come from 3 brands — AAM, GM GENUINE and MOTIVE GEAR. The "Popular" part is AAM 40070463.

Listed part numbers: AAM 40070463, MOTIVE GEAR GM95L and AAM 40058731, plus the other parts above.

This table covers the Differential Ring Gear bolts. Read more

3 Differential Ring Gear Bolt parts for the 2021 Chevrolet Express 3500 come from 2 brands — GM GENUINE and AAM.

Part numbers include AAM 14012703, GM GENUINE 11546991 and GM GENUINE 12479386.

This table covers the seals at the Differential. 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 2021 Chevrolet Express 3500 — AAM 26064030.

This table covers the Differential Spider gears. Read more

6 Differential Spider Gear parts for the 2021 Chevrolet Express 3500 come from 2 brands — GM GENUINE and AAM. The "Popular" part is AAM 74040917.

Part numbers include AAM 74040917, GM GENUINE 12471687 and GM GENUINE 12479074, among others listed above.

This table covers the Differential washers. Read more

4 Differential Washer parts for the 2021 Chevrolet Express 3500 come from GM GENUINE.

This group includes GM GENUINE 14039026, GM GENUINE 03977345 and GM GENUINE 03977346 and the remaining parts above.

This table covers the driveshafts that carry torque from the transmission or transfer case. Read more

9 Drive Shaft parts are listed for the 2021 Chevrolet Express 3500, from GM GENUINE and DORMAN. GM GENUINE 84675726 carries the "Popular" badge.

Listed part numbers: GM GENUINE 84675726, GM GENUINE 84675730 and DORMAN 966480, plus the other parts above.

This table covers the Drive Shaft bolts. Read more

This group shows a single part: GM GENUINE 11548472.

This table covers the Drive Shaft Center Support 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 Drive Shaft Center Support Bearing parts are listed for the 2021 Chevrolet Express 3500, from DEA / MARMON RIDE CONTROL, WESTAR, GM GENUINE and 2 other brands. GM GENUINE 84448547 carries the "Popular" badge.

Economy: 2 parts, from DEA / MARMON RIDE CONTROL and WESTAR. A representative part number is DEA / MARMON RIDE CONTROL A60078.

The Standard Replacement section: 3 options from GM GENUINE, ANCHOR and PIONEER. GM GENUINE 84448547 is listed in this group.

Listed part numbers: GM GENUINE 84448547, DEA / MARMON RIDE CONTROL A60078 and WESTAR DS6558, plus the other parts above.

This table covers the brackets that mount the Drive Shaft Center Support Bearing. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Express 3500.

Listed part numbers: GM GENUINE 15294768 and GM GENUINE 15295278.

This table covers the Drive Shaft End yokes. Read more

4 Drive Shaft End Yoke parts for the 2021 Chevrolet Express 3500 come from 2 brands — GM GENUINE and USA STANDARD GEAR.

Listed part numbers: GM GENUINE 85114564, GM GENUINE 85550093 and GM GENUINE 85550100, plus the other parts above.

This table covers the Drive Shaft retainers. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Express 3500.

Listed part numbers: GM GENUINE 23107857 and GM GENUINE 23170499.

This table covers the Drive Shaft Slip yokes. Read more

6 Drive Shaft Slip Yoke parts are listed for the 2021 Chevrolet Express 3500, from GM GENUINE, DORMAN and AAM. DORMAN 697519 carries the "Popular" badge.

Part numbers include DORMAN 697519, AAM 40200758 and GM GENUINE 23251192, among others listed above.