This page lists 96 drivetrain parts for the 2021 Cadillac XT6, across 37 part types, covering both the 2.0L L4 Turbocharged and the 3.6L V6. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Cadillac XT6, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. Most of the listed parts are CV Axle (15 parts), Transfer Case Fluid (7 parts) and CV Joint Boot Band (6 parts). The other 34 part types cover the remaining 68 parts.
The 2021 Cadillac XT6 was sold with both the 2.0L L4 Turbocharged and the 3.6L V6. 58 parts fit every engine; the other 38 are engine-specific. Each part shows which engine(s) it fits.
10 brands supply drivetrain parts for the 2021 Cadillac XT6, led by GM GENUINE (63 parts), VALVOLINE (11 parts) and ELRING (6 parts), plus 7 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Cadillac XT6. 8 parts have it, including SKF 13544A (Axle Shaft Seal) and GM GENUINE 84990738 (CV Axle). Each part number opens a page with every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Popular Fits: all 2021 XT6 engines | 13544A | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| ACDELCO Fits: 3.6L V6 | 291363 | 🇺🇸 US 🇨🇦 CA | GM Original Equipment | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 23276834 | 🇺🇸 US 🇨🇦 CA | Rear Left4WD | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 291342 | 🇺🇸 US 🇨🇦 CA | Rear4WD | View on Amazon |
| TIMKEN Fits: all 2021 XT6 engines | SL260587 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
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.
5 Axle Shaft Seal parts are listed for the 2021 Cadillac XT6, from GM GENUINE, SKF, ACDELCO and 1 other brand. SKF 13544A carries the "Popular" badge. 4 parts fit every engine; the other 1 is engine-specific.
Listed part numbers: SKF 13544A, ACDELCO 291363 and GM GENUINE 23276834, plus the other parts above.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 2.0L L4 Turbocharged | 84990738 | 🇺🇸 US 🇨🇦 CA | Front Left9 Speed Automatic Trans. | View on Amazon |
| TOP NOTCH Popular Fits: all 2021 XT6 engines | TN20367 | 🇺🇸 US 🇨🇦 CA | Front Right4WD | View on Amazon |
| TRAKMOTIVE Popular Fits: all 2021 XT6 engines | GM8491 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Popular Fits: all 2021 XT6 engines | GM86004 | 🇺🇸 US | AAR Joint Design | View on Amazon |
| APWI Fits: 3.6L V6 | GM8548 | 🇺🇸 US | Front RightFWD | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 86508788 | 🇺🇸 US 🇨🇦 CA | Universal Joints Included: No | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 85150636 | 🇺🇸 US 🇨🇦 CA | Rear LeftSport | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 86270999 | 🇺🇸 US 🇨🇦 CA | Front RightFWD | View on Amazon |
| GSP Fits: all 2021 XT6 engines | NCV16016 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| GSP Fits: all 2021 XT6 engines | NCV17018 | 🇺🇸 US 🇨🇦 CA | Front Right4WD | View on Amazon |
| GSP Fits: all 2021 XT6 engines | NCV17013 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| GSP Fits: 3.6L V6 | NCV17021 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| TOP NOTCH Fits: all 2021 XT6 engines | TN20358 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| TOP NOTCH Fits: all 2021 XT6 engines | TN20362 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| TRAKMOTIVE Fits: all 2021 XT6 engines | GM86047 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
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.
15 CV Axle parts are listed for the 2021 Cadillac XT6, from GM GENUINE, GSP, TOP NOTCH and 2 other brands. GM GENUINE 84990738 carries the "Popular" badge. 10 parts fit every engine; the other 5 are engine-specific.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged | 85662927 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged | 85662928 | 🇺🇸 US 🇨🇦 CA | Front9 speed Automatic trans. | View on Amazon |
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.
GM GENUINE supplies both parts for the 2021 Cadillac XT6.
This group includes GM GENUINE 85662927 and GM GENUINE 85662928.
CV Joint Boot Band
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 11611752 | 🇺🇸 US 🇨🇦 CA | Rear Inboard Inner4WD | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged | 364038 | 🇺🇸 US 🇨🇦 CA | Front Outboard OuterSingle Use | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 84167063 | 🇺🇸 US 🇨🇦 CA | Front InnerSINGLE USE | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged | 84167070 | 🇺🇸 US 🇨🇦 CA | Fits Front InnerEar Clamp, 98MM ID, 8MM Wide | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 84207707 | 🇺🇸 US 🇨🇦 CA | Fits Rear Outboard InnerCLAMP | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 84167071 | 🇺🇸 US 🇨🇦 CA | Front Outboard OuterLARGE CLAMP | View on Amazon |
This table covers the bands that clamp a CV boot to the joint.
6 CV Joint Boot Band parts for the 2021 Cadillac XT6 come from GM GENUINE. 3 parts fit every engine; the other 3 are engine-specific.
Part numbers include GM GENUINE 11611752, GM GENUINE 364038 and GM GENUINE 84167063, among others listed above.
CV Joint Lock Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 90223082 | 🇺🇸 US 🇨🇦 CA | Front InnerRETAINING | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 22727024 | 🇺🇸 US 🇨🇦 CA | Front Inner28.8X2.5X29.5 | View on Amazon |
This table covers the CV Joint Lock rings.
2 CV Joint Lock Ring parts for the 2021 Cadillac XT6 come from GM GENUINE. Every part fits both the 2.0L L4 Turbocharged and the 3.6L V6.
Part numbers include GM GENUINE 90223082 and GM GENUINE 22727024.
Differential Carrier
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged | 24289904 | 🇺🇸 US 🇨🇦 CA | Front4WD or AWD | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged | 24289906 | 🇺🇸 US 🇨🇦 CA | FrontFWD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 24289900 | 🇺🇸 US 🇨🇦 CA | Front4WD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 24289902 | 🇺🇸 US 🇨🇦 CA | FrontFWD | View on Amazon |
This table covers the carriers that hold the differential gears in the axle.
GM GENUINE supplies the 4 Differential Carrier parts for the 2021 Cadillac XT6.
This group includes GM GENUINE 24289904, GM GENUINE 24289906 and GM GENUINE 24289900 and the remaining parts above.
Differential Carrier Bearing / Race
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 24237378 | 🇺🇸 US 🇨🇦 CA | Front4WD | View on Amazon |
This table covers the bearings and races that support the differential carrier.
One part is listed for the 2021 Cadillac XT6 — GM GENUINE 24237378.
Differential Carrier Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 11609598 | 🇺🇸 US 🇨🇦 CA | M12X1.75X80.9 | View on Amazon |
This table covers the Differential Carrier bolts.
This group shows a single part: GM GENUINE 11609598.
Differential Carrier Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 84905394 | 🇺🇸 US 🇨🇦 CA | Rear4WD | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 84417056 | 🇺🇸 US 🇨🇦 CA | Front4WD | View on Amazon |
This table covers the Differential Carrier 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.
GM GENUINE supplies both parts for the 2021 Cadillac XT6. All of them fit every engine offered in the 2021 XT6.
This group includes GM GENUINE 84905394 and GM GENUINE 84417056.
Differential Carrier Fluid Baffle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged | 24298738 | 🇺🇸 US 🇨🇦 CA | 9 speed Automatic trans.Ratio Transaxle Final Drive 3.47,Stop/Start Engine Control System (KL9) | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged | 24298739 | 🇺🇸 US 🇨🇦 CA | 9 speed Automatic trans.Case Side | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 24298740 | 🇺🇸 US 🇨🇦 CA | 9 speed Automatic trans.Bolts To Case Assembly Side | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 24298741 | 🇺🇸 US 🇨🇦 CA | 9 speed Automatic trans.Bolts to Torque Converter Housing Side | View on Amazon |
This table covers the baffles that control oil in the differential carrier.
GM GENUINE supplies the 4 Differential Carrier Fluid Baffle parts for the 2021 Cadillac XT6.
This group includes GM GENUINE 24298738, GM GENUINE 24298739 and GM GENUINE 24298740 and the remaining parts above.
Differential Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 85001638 | 🇺🇸 US 🇨🇦 CA | Programming Required: YES | View on Amazon |
This table covers the Differential control modules.
This group shows a single part: GM GENUINE 85001638.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: all 2021 XT6 engines | B18350 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
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.
One part is listed for the 2021 Cadillac XT6 — ELRING B18350.
Differential Cover Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 23234990 | 🇺🇸 US 🇨🇦 CA | 4WD | View on Amazon |
This table covers the Differential Cover plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
This group shows a single part: GM GENUINE 23234990.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 19256069 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 19256068 | 🇺🇸 US 🇨🇦 CA | Rear4WD | View on Amazon |
This table covers the Differential Fill drain plugs.
GM GENUINE supplies both parts for the 2021 Cadillac XT6. All of them fit every engine offered in the 2021 XT6.
This group includes GM GENUINE 19256069 and GM GENUINE 19256068.
Differential Oil Slinger
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 23276833 | 🇺🇸 US 🇨🇦 CA | SLINGER ON TORQUE TUBE | View on Amazon |
This table covers the slingers that keep gear oil off the pinion seal.
One part is listed for the 2021 Cadillac XT6 — GM GENUINE 23276833.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 87845955 | 🇺🇸 US 🇨🇦 CA | 4WDGROMMET | View on Amazon |
| TIMKEN Fits: all 2021 XT6 engines | SL260561 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
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.
2 Differential Pinion Seal parts are listed for the 2021 Cadillac XT6, from GM GENUINE and TIMKEN. All of them fit every engine offered in the 2021 XT6.
Listed part numbers: GM GENUINE 87845955 and TIMKEN SL260561.
Differential Ring Gear
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged | 24298251 | 🇺🇸 US 🇨🇦 CA | Front9 speed Automatic trans. | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 24298250 | 🇺🇸 US 🇨🇦 CA | Front9 speed Automatic trans. | View on Amazon |
This table covers the Differential Ring gears.
2 Differential Ring Gear parts for the 2021 Cadillac XT6 come from GM GENUINE.
Part numbers include GM GENUINE 24298251 and GM GENUINE 24298250.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: all 2021 XT6 engines | B18240 | 🇺🇸 US 🇨🇦 CA | Material: HNBR (hydrogenated nitrile butadiene rubber) | View on Amazon |
| ELRING Fits: all 2021 XT6 engines | B18360 | 🇺🇸 US 🇨🇦 CA | Material: FPM (fluoride rubber)Radial Shaft Seal Design: BS2 BD | View on Amazon |
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.
2 Differential Seal parts for the 2021 Cadillac XT6 come from ELRING. Every part fits both the 2.0L L4 Turbocharged and the 3.6L V6.
Listed part numbers: ELRING B18240 and ELRING B18360.
Drive Shaft Retainer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 23432713 | 🇺🇸 US 🇨🇦 CA | Fits 4WD | View on Amazon |
This table covers the Drive Shaft retainers.
This group shows a single part: GM GENUINE 23432713.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 2021 XT6 engines | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| ACDELCO Fits: all 2021 XT6 engines | 105050 | 🇺🇸 US | Pentosin CHF-11S33.8 OZ | View on Amazon |
| VALVOLINE Fits: all 2021 XT6 engines | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: all 2021 XT6 engines | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: all 2021 XT6 engines | 723856 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | View on Amazon |
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.
5 Gear Oil parts are listed for the 2021 Cadillac XT6, from VALVOLINE and ACDELCO. VALVOLINE VV975 carries the "Popular" badge. All of them fit every engine offered in the 2021 XT6.
Listed part numbers: VALVOLINE VV975, ACDELCO 105050 and VALVOLINE 889785, plus the other parts above.
Retaining Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged | 24231157 | 🇺🇸 US 🇨🇦 CA | Front4WD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 24271417 | 🇺🇸 US 🇨🇦 CA | Front9 speed Automatic trans. | View on Amazon |
This table covers the Retaining rings.
GM GENUINE supplies both parts for the 2021 Cadillac XT6.
This group includes GM GENUINE 24231157 and GM GENUINE 24271417.
Torque Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 85686599 | 🇺🇸 US 🇨🇦 CA | 4WDExcept Electronic Twin Clutch Positraction Axle (G99) | View on Amazon |
This table covers the Torque tubes.
This group shows a single part: GM GENUINE 85686599.
Transfer Case Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: all 2021 XT6 engines | 795390 | 🇺🇸 US 🇨🇦 CA | Housing Bolt | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 11603660 | 🇺🇸 US 🇨🇦 CA | 4WDM6X1X28 | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 89058602 | 🇺🇸 US 🇨🇦 CA | 4WDM8X1.25X30,24 Thread | View on Amazon |
This table covers the Transfer Case bolts.
3 Transfer Case Bolt parts for the 2021 Cadillac XT6 come from 2 brands — GM GENUINE and ELRING. 2 parts fit every engine; the other 1 is engine-specific.
Part numbers include ELRING 795390, GM GENUINE 11603660 and GM GENUINE 89058602.
Transfer Case Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 19132948 | 🇺🇸 US 🇨🇦 CA | Rear, Output4WD | View on Amazon |
This table covers the Transfer Case flanges.
This group shows a single part: GM GENUINE 19132948.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 2021 XT6 engines | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Popular Fits: all 2021 XT6 engines | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: all 2021 XT6 engines | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: all 2021 XT6 engines | 723856 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | View on Amazon |
| VALVOLINE Fits: all 2021 XT6 engines | 819195 | 🇺🇸 US 🇨🇦 CA | VPS Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: all 2021 XT6 engines | 902146 | 🇺🇸 US 🇨🇦 CA | Extended Protection Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: all 2021 XT6 engines | 904644 | 🇺🇸 US 🇨🇦 CA | VPS Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
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.
VALVOLINE supplies the 7 Transfer Case Fluid parts for the 2021 Cadillac XT6. VALVOLINE VV975 carries the "Popular" badge. All of them fit every engine offered in the 2021 XT6.
Part numbers include VALVOLINE VV975, VALVOLINE 889785 and VALVOLINE 882505, among others listed above.
Transfer Case Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: all 2021 XT6 engines | B18330 | 🇺🇸 US 🇨🇦 CA | 4WD | View on Amazon |
| ELRING Fits: all 2021 XT6 engines | B18340 | 🇺🇸 US 🇨🇦 CA | Rear propshaft at transfer case4WD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 19132946 | 🇺🇸 US 🇨🇦 CA | 4WD200MM OD/193MM ID | View on Amazon |
This table covers the gaskets that seal the Transfer Case. 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.
3 Transfer Case Gasket parts for the 2021 Cadillac XT6 come from 2 brands — ELRING and GM GENUINE. 2 parts fit every engine; the other 1 is engine-specific.
This group includes ELRING B18330, ELRING B18340 and GM GENUINE 19132946.
Transfer Case Housing Extension Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 85136882 | 🇺🇸 US 🇨🇦 CA | Inner4WD | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 85136884 | 🇺🇸 US 🇨🇦 CA | Outer4WD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 19208892 | 🇺🇸 US 🇨🇦 CA | Rear4WD | View on Amazon |
This table covers the seals at the Transfer Case Housing Extension. 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.
3 Transfer Case Housing Extension Seal parts for the 2021 Cadillac XT6 come from GM GENUINE. 2 parts fit every engine; the other 1 is engine-specific.
Part numbers include GM GENUINE 85136882, GM GENUINE 85136884 and GM GENUINE 19208892.
Transfer Case Input Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 84823713 | 🇺🇸 US 🇨🇦 CA | 4WDINPUT SHAFT SEAL KIT | View on Amazon |
| GM GENUINE Fits: all 2021 XT6 engines | 85634029 | 🇺🇸 US 🇨🇦 CA | 4WDIDS SEAL KIT | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 19132945 | 🇺🇸 US 🇨🇦 CA | 4WD62.25MM OD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 19210795 | 🇺🇸 US 🇨🇦 CA | 4WD | View on Amazon |
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.
4 Transfer Case Input Shaft Seal parts for the 2021 Cadillac XT6 come from GM GENUINE. 2 parts fit every engine; the other 2 are engine-specific.
Listed part numbers: GM GENUINE 84823713, GM GENUINE 85634029 and GM GENUINE 19132945, plus the other parts above.
Transfer Case Intermediate Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged | 84392864 | 🇺🇸 US 🇨🇦 CA | 4WD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 19209536 | 🇺🇸 US 🇨🇦 CA | 4WD | View on Amazon |
This table covers the Transfer Case Intermediate shafts.
2 Transfer Case Intermediate Shaft parts for the 2021 Cadillac XT6 come from GM GENUINE.
Listed part numbers: GM GENUINE 84392864 and GM GENUINE 19209536.
Transfer Case Intermediate Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 19132944 | 🇺🇸 US 🇨🇦 CA | 4WD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 19206322 | 🇺🇸 US 🇨🇦 CA | 4WD41.16MM OD | View on Amazon |
This table covers the seals at the Transfer Case Intermediate 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.
GM GENUINE supplies both parts for the 2021 Cadillac XT6.
Listed part numbers: GM GENUINE 19132944 and GM GENUINE 19206322.
Transfer Case Locating Pin
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 84392855 | 🇺🇸 US 🇨🇦 CA | 4WDPin-5 Diameter X 10 Long | View on Amazon |
This table covers the Transfer Case Locating pins.
One part is listed for the 2021 Cadillac XT6 — GM GENUINE 84392855.
Transfer Case Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 86805253 | 🇺🇸 US 🇨🇦 CA | 4WDLong Motor Housing | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 86805252 | 🇺🇸 US 🇨🇦 CA | 4WDSHORT MOTOR HOUSING | View on Amazon |
This table covers the Transfer Case motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
2 Transfer Case Motor parts for the 2021 Cadillac XT6 come from GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.
This group includes GM GENUINE 86805253 and GM GENUINE 86805252.
Transfer Case Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2021 XT6 engines | 19256069 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
This table covers the Transfer Case Oil drain plugs.
One part is listed for the 2021 Cadillac XT6 — GM GENUINE 19256069.
Transfer Case Output Shaft Nut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 89047861 | 🇺🇸 US 🇨🇦 CA | 4WD | View on Amazon |
This table covers the Transfer Case Output Shaft nuts.
One part is listed for the 2021 Cadillac XT6 — GM GENUINE 89047861.
Transfer Case Output Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 19132939 | 🇺🇸 US 🇨🇦 CA | Rear4WD | View on Amazon |
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.
One part is listed for the 2021 Cadillac XT6 — GM GENUINE 19132939.
Transfer Case Shift Shaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 84785609 | 🇺🇸 US 🇨🇦 CA | Contains Two Rows of Teeth | View on Amazon |
This table covers the wear sleeves used to restore a Transfer Case Shift Shaft seal surface.
This group shows a single part: GM GENUINE 84785609.
Transfer Case Vent
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 19132947 | 🇺🇸 US 🇨🇦 CA | 4WD | View on Amazon |
This table covers the vents on the transfer case.
This group shows a single part: GM GENUINE 19132947.
Buying Drivetrain Parts for a 2021 Cadillac XT6
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Some drivetrain parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: CV Axle and Transfer Case Fluid .
Frequently Asked Questions
How many drivetrain parts fit the 2021 Cadillac XT6?
Our catalog currently lists 96 drivetrain parts for the 2021 Cadillac XT6 across 37 subcategories and 10 brands, covering both the 2.0L L4 Turbocharged and the 3.6L V6. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2021 Cadillac XT6 engines?
Some do. 58 parts fit every engine; the other 38 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of drivetrain problems on a 2021 Cadillac XT6?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Cadillac XT6 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Cadillac XT6?
First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Cadillac XT6
Drivetrain Parts for Other Cadillac XT6 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.