The 2019 Cadillac CT6 has 59 drivetrain parts with verified fitment on this page — 27 part types and 15 brands, covering all 5 engine options (2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged, 3.0L V6 Turbocharged, 3.6L V6 and 4.2L V8 Turbocharged). Each part includes a manufacturer part number and application notes.
On the 2019 Cadillac CT6, 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 (6 parts), Gear Oil (5 parts) and Transfer Case Output Shaft Seal (5 parts). The other 24 part types cover the remaining 43 parts.
The 2019 Cadillac CT6 was sold with 5 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
15 brands supply drivetrain parts for the 2019 Cadillac CT6, led by GM GENUINE (33 parts), WJB / INMOTION PARTS (4 parts) and VALVOLINE (4 parts), plus 12 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2019 Cadillac CT6. 3 parts have it, including GM GENUINE 84509596 (CV Axle) and VALVOLINE VV975 (Gear Oil). Each part number opens a page with every vehicle that part fits.
Axle Intermediate Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 85587252 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
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.
One part is listed for the 2019 Cadillac CT6 — GM GENUINE 85587252.
Axle Intermediate Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 23269758 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
This table covers the seals at the Axle 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.
This group shows a single part: GM GENUINE 23269758.
Axle Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 84371225 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the Axle shafts.
This group shows a single part: GM GENUINE 84371225.
Axle Shaft Housing / Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 85596736 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Axle Shaft Housing tubes.
This group shows a single part: GM GENUINE 85596736.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 291352 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 23269761 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| SKF Fits: 3.6L V6, 4.2L V8 Turbocharged | 18563A | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.6L V6, 4.2L V8 Turbocharged | WS18563A | 🇺🇸 US 🇨🇦 CA | Rear0.453 Width | 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.
4 Axle Shaft Seal parts are listed for the 2019 Cadillac CT6, from GM GENUINE, SKF and WJB / INMOTION PARTS.
Part numbers include GM GENUINE 291352, GM GENUINE 23269761 and SKF 18563A, among others listed above.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 4.2L V8 Turbocharged, 3.6L V6 | 84509596 | 🇺🇸 US 🇨🇦 CA | Front Rightwith RPO Code Abwr, ACS7 | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 84509595 | 🇺🇸 US 🇨🇦 CA | Front Leftwith RPO Code Abwp, ACS6 | View on Amazon |
| GM GENUINE Fits: 4.2L V8 Turbocharged | 84519468 | 🇺🇸 US 🇨🇦 CA | Rear Rightwith RPO Code ABVL,ABUX,AARM SINGLE USE | View on Amazon |
| GSP Fits: 4.2L V8 Turbocharged | NCV17026 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| TOP NOTCH Fits: 4.2L V8 Turbocharged | TN20392 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| TRAKMOTIVE Fits: 3.6L V6, 4.2L V8 Turbocharged | GM86057 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | 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.
6 CV Axle parts are listed for the 2019 Cadillac CT6, from GM GENUINE, GSP, TOP NOTCH and 1 other brand. GM GENUINE 84509596 carries the "Popular" badge.
This group includes GM GENUINE 84509596, GM GENUINE 84509595 and GM GENUINE 84519468 and the remaining parts above.
CV Intermediate Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 23269757 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
This table covers the CV Intermediate shafts.
This group shows a single part: GM GENUINE 23269757.
CV Joint Lock Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 11611639 | 🇺🇸 US 🇨🇦 CA | RearSingle Use | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 84210850 | 🇺🇸 US 🇨🇦 CA | Front Inner | View on Amazon |
| GM GENUINE Fits: 4.2L V8 Turbocharged | 23417960 | 🇺🇸 US 🇨🇦 CA | Rear Inner | View on Amazon |
This table covers the CV Joint Lock rings.
3 CV Joint Lock Ring parts for the 2019 Cadillac CT6 come from GM GENUINE.
Part numbers include GM GENUINE 11611639, GM GENUINE 84210850 and GM GENUINE 23417960.
Differential Bearing Retainer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 23417954 | 🇺🇸 US 🇨🇦 CA | V Model | View on Amazon |
This table covers the Differential Bearing retainers.
One part is listed for the 2019 Cadillac CT6 — GM GENUINE 23417954.
Differential Carrier
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 85596738 | 🇺🇸 US 🇨🇦 CA | Differential Cover Gasket Included: YES | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 86827951 | 🇺🇸 US 🇨🇦 CA | 200MM3.27 OPEN | View on Amazon |
This table covers the carriers that hold the differential gears in the axle.
GM GENUINE supplies both parts for the 2019 Cadillac CT6.
Listed part numbers: GM GENUINE 85596738 and GM GENUINE 86827951.
Differential Carrier Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 11611275 | 🇺🇸 US 🇨🇦 CA | SINGLE USEM16X2X111,23THD | View on Amazon |
| GM GENUINE Fits: 4.2L V8 Turbocharged | 11610908 | 🇺🇸 US 🇨🇦 CA | M12X1.75X70,66THD26.6 OD | View on Amazon |
This table covers the Differential Carrier bolts.
2 Differential Carrier Bolt parts for the 2019 Cadillac CT6 come from GM GENUINE.
Part numbers include GM GENUINE 11611275 and GM GENUINE 11610908.
Differential Carrier Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 20762354 | 🇺🇸 US 🇨🇦 CA | Mounted In Differential Housing | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 20762248 | 🇺🇸 US 🇨🇦 CA | Mounted in Cradle | 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 2019 Cadillac CT6.
Listed part numbers: GM GENUINE 20762354 and GM GENUINE 20762248.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 3.6L V6, 4.2L V8 Turbocharged | B18170 | 🇺🇸 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 2019 Cadillac CT6 — ELRING B18170.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 55573646 | 🇺🇸 US 🇨🇦 CA | Includes O-Ring | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 84479772 | 🇺🇸 US 🇨🇦 CA | Front DifferentialM22X1.5X12.4 INT Hex | View on Amazon |
This table covers the Differential Fill drain plugs.
GM GENUINE supplies both parts for the 2019 Cadillac CT6.
Part numbers include GM GENUINE 55573646 and GM GENUINE 84479772.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 86827963 | 🇺🇸 US 🇨🇦 CA | SINGLE USE | View on Amazon |
| TIMKEN Fits: 3.6L V6 | SL260408 | 🇺🇸 US | RearRWD | 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 2019 Cadillac CT6, from GM GENUINE and TIMKEN.
Listed part numbers: GM GENUINE 86827963 and TIMKEN SL260408.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 3.6L V6, 4.2L V8 Turbocharged | B18200 | 🇺🇸 US 🇨🇦 CA | Outer Diameter 2 [MM]: 90,3 | 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.
This group shows a single part: ELRING B18200.
Differential Side Cover Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23417962 | 🇺🇸 US 🇨🇦 CA | SINGLE USE | View on Amazon |
This table covers the seals at the Differential Side Cover. 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.
This group shows a single part: GM GENUINE 23417962.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.6L V6 | 986537 | 🇺🇸 US 🇨🇦 CA | Length: 55.52" | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 23336889 | 🇺🇸 US | Front | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 84553705 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.6L V6 | WDS86537 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
4 Drive Shaft parts for the 2019 Cadillac CT6 come from 3 brands — GM GENUINE, DORMAN and WJB / INMOTION PARTS.
Listed part numbers: DORMAN 986537, GM GENUINE 23336889 and GM GENUINE 84553705, plus the other parts above.
Drive Shaft Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 11546698 | 🇺🇸 US 🇨🇦 CA | Fits FrontM12X1.75X64,62THD | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 4.2L V8 Turbocharged | 11547241 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
This table covers the Drive Shaft bolts.
GM GENUINE supplies both parts for the 2019 Cadillac CT6.
Part numbers include GM GENUINE 11546698 and GM GENUINE 11547241.
Drive Shaft Flange Yoke
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23417953 | 🇺🇸 US 🇨🇦 CA | At Rear Axle | View on Amazon |
This table covers the Drive Shaft Flange yokes.
One part is listed for the 2019 Cadillac CT6 — GM GENUINE 23417953.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 3.6L V6 | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| ACDELCO Fits: 3.6L V6 | 104108 | 🇺🇸 US | 1 QuartDexron 75W-90 ACDELCO | View on Amazon |
| VALVOLINE Fits: 3.6L V6 | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 3.6L V6 | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 3.6L V6 | 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 2019 Cadillac CT6, from VALVOLINE and ACDELCO. VALVOLINE VV975 carries the "Popular" badge.
This group includes VALVOLINE VV975, ACDELCO 104108 and VALVOLINE 889785 and the remaining parts above.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 3.6L V6 | 104100 | 🇺🇸 US | Synthetic(TF 0870)33.8 0Z | 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.
One part is listed for the 2019 Cadillac CT6 — ACDELCO 104100.
Transfer Case Input Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 3.6L V6 | NS224460 | 🇺🇸 US 🇨🇦 CA | with Magna 3713G Transfer Casewith Full Time 4WD | View on Amazon |
| NATIONAL Fits: 3.6L V6 | 224460 | 🇺🇸 US 🇨🇦 CA | AWDwith Magna 3713G Transfer Case | View on Amazon |
| SCHAEFFLER Fits: 3.6L V6 | SS2772 | 🇺🇸 US 🇨🇦 CA | AWD2.37" O.D. X 0.39" Width | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.6L V6 | WS224460 | 🇺🇸 US 🇨🇦 CA | AWDwith Magna 3713G Transfer Case | 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 2019 Cadillac CT6 come from 4 brands — BCA, NATIONAL, SCHAEFFLER and 1 other brand.
Part numbers include BCA NS224460, NATIONAL 224460 and SCHAEFFLER SS2772, among others listed above.
Transfer Case Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.6L V6 | 600921 | 🇺🇸 US 🇨🇦 CA | AWD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 84336363 | 🇺🇸 US 🇨🇦 CA | AWDMating Connector Use 19369184 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | TCM184 | 🇺🇸 US 🇨🇦 CA | 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.
3 Transfer Case Motor parts for the 2019 Cadillac CT6 come from 3 brands — DORMAN, GM GENUINE and STANDARD MOTOR PRODUCTS.
Part numbers include DORMAN 600921, GM GENUINE 84336363 and STANDARD MOTOR PRODUCTS TCM184.
Transfer Case Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23247374 | 🇺🇸 US 🇨🇦 CA | AWD | View on Amazon |
This table covers the Transfer Case Oil drain plugs.
One part is listed for the 2019 Cadillac CT6 — GM GENUINE 23247374.
Transfer Case Output Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 3.6L V6 | 710694 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
| BCA Fits: 3.6L V6 | NS710694 | 🇺🇸 US 🇨🇦 CA | Frontwith Magna 3713G Transfer Case | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 23247372 | 🇺🇸 US 🇨🇦 CA | Fits FrontAWD | View on Amazon |
| SCHAEFFLER Fits: 3.6L V6 | SS6390 | 🇺🇸 US 🇨🇦 CA | Front2.96" O.D. X 0.49" Width | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.6L V6 | WS710694 | 🇺🇸 US 🇨🇦 CA | FrontAWD | 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.
5 Transfer Case Output Shaft Seal parts are listed for the 2019 Cadillac CT6, from NATIONAL, BCA, GM GENUINE and 2 other brands. NATIONAL 710694 carries the "Popular" badge.
Listed part numbers: NATIONAL 710694, BCA NS710694 and GM GENUINE 23247372, plus the other parts above.
Transfer Case Vent
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23247376 | 🇺🇸 US 🇨🇦 CA | AWD | View on Amazon |
This table covers the vents on the transfer case.
This group shows a single part: GM GENUINE 23247376.
Buying Drivetrain Parts for a 2019 Cadillac CT6
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. Every drivetrain part here is 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 Gear Oil .
Frequently Asked Questions
How many drivetrain parts fit the 2019 Cadillac CT6?
Our catalog currently lists 59 drivetrain parts for the 2019 Cadillac CT6 across 27 subcategories and 15 brands, covering all 5 engine options (2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged, 3.0L V6 Turbocharged, 3.6L V6 and 4.2L V8 Turbocharged). Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2019 Cadillac CT6 engines?
Yes. Every drivetrain part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 2019 Cadillac CT6?
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 2019 Cadillac CT6 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 2019 Cadillac CT6?
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 2019 Cadillac CT6
Drivetrain Parts for Other Cadillac CT6 Years
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