2018 BMW 340I Drivetrain Parts

This table covers the Axle bolts. Read more

This group shows a single part: REIN HWB1067.

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

4 Axle Shaft Seal parts for the 2018 BMW 340I come from 2 brands — TIMKEN and AJUSA.

Listed part numbers: AJUSA 12021750, TIMKEN SL260472 and TIMKEN SL260162, plus the other parts above.

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

24 CV Axle parts for the 2018 BMW 340I come from 5 brands — TOP NOTCH, GSP, TRAKMOTIVE and 2 other brands. The "Popular" part is TOP NOTCH TN10036PR.

In the Premium grade, TOP NOTCH supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is TOP NOTCH TN10036PR.

In the Standard Replacement grade, GSP, TRAKMOTIVE, TOP NOTCH and 2 other brands supply 23 parts: built to original-equipment specification. A representative part number is APWI BM8361.

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

6 CV Joint Boot parts for the 2018 BMW 340I come from 3 brands — REIN, BECK/ARNLEY and GKN. The "Popular" part is REIN BKN0116.

Listed part numbers: REIN BKN0116, REIN BKN0099R and BECK/ARNLEY 1032966, plus the other 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

This group shows a single part: AJUSA 16031150.

This table covers the Differential Fill drain plugs. Read more

2 Differential Fill / Drain Plug parts for the 2018 BMW 340I come from REIN.

Part numbers include REIN HWP0065 and REIN HWU0065.

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

4 Differential Pinion Seal parts for the 2018 BMW 340I come from 2 brands — AJUSA and TIMKEN.

Listed part numbers: AJUSA 12005350, AJUSA 12015650 and TIMKEN SL260487, plus the other parts above.

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

ELRING supplies the 4 Differential Seal parts for the 2018 BMW 340I.

This group includes ELRING 729370, ELRING 761160 and ELRING B16790 and the remaining parts above.

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

7 Drive Shaft parts are listed for the 2018 BMW 340I, from DORMAN, SKP, WJB / INMOTION PARTS and 1 other brand. SKP SK938277 carries the "Popular" badge.

Listed part numbers: SKP SK938277, WJB / INMOTION PARTS WDS38277 and CARDONE 659005, plus the other parts above.

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

7 Drive Shaft Center Support Bearing parts are listed for the 2018 BMW 340I, from VAICO, REIN, WJB / INMOTION PARTS and 3 other brands. REIN BEM0039P carries the "Popular" badge.

In the Economy grade, VAICO, REIN, WJB / INMOTION PARTS and 1 other brand supply 5 parts: the catalog's value-priced group. A representative part number is REIN BEM0039P.

The Standard Replacement section: 2 options from BCA and NATIONAL. BCA NB106CC is listed in this group.

This group includes REIN BEM0039P, WJB / INMOTION PARTS RB60062RS and ÜRO PARTS 26128615621 and the remaining parts above.

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

One part is listed for the 2018 BMW 340I — VAICO V201048.

This table covers the seals at the Drive 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

This group shows a single part: ELRING B15590.

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

2 Gear Oil parts for the 2018 BMW 340I come from VALVOLINE.

Part numbers include VALVOLINE 915052 and VALVOLINE 915053.

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

2 Transfer Case Fluid parts for the 2018 BMW 340I come from REIN.

Listed part numbers: REIN FLDF005 and REIN FLDF002.

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

2 Transfer Case Input Shaft Bearing parts for the 2018 BMW 340I come from 2 brands — NATIONAL and WJB / INMOTION PARTS.

Listed part numbers: NATIONAL 210L and WJB / INMOTION PARTS RB6210NR.

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

2 Transfer Case Input Shaft Seal parts are listed for the 2018 BMW 340I, from NATIONAL and WJB / INMOTION PARTS.

Part numbers include NATIONAL 710743 and WJB / INMOTION PARTS WS710743.

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. Read more

One part is listed for the 2018 BMW 340I — REIN TDA0013.

This table covers the Transfer Case Oil drain plugs. Read more

2 Transfer Case Oil Drain Plug parts for the 2018 BMW 340I come from REIN.

This group includes REIN HWP0065 and REIN HWU0065.

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

6 Transfer Case Output Shaft Bearing parts are listed for the 2018 BMW 340I, from WJB / INMOTION PARTS, BCA and NATIONAL. BCA NB109 carries the "Popular" badge.

Economy: 2 parts, from WJB / INMOTION PARTS. A representative part number is WJB / INMOTION PARTS RB6009.

The Standard Replacement section: 3 options from BCA and NATIONAL. BCA NB109 is listed in this group.

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

Part numbers include BCA NB109, WJB / INMOTION PARTS RB6009 and WJB / INMOTION PARTS RB6008, among others listed above.

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

5 Transfer Case Output Shaft Repair Sleeve parts for the 2018 BMW 340I come from 3 brands — WJB / INMOTION PARTS, NATIONAL and BCA. The "Popular" part is WJB / INMOTION PARTS WS99166.

This group includes WJB / INMOTION PARTS WS99166, BCA NS99166 and NATIONAL 99166 and the remaining 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

4 Transfer Case Output Shaft Seal parts for the 2018 BMW 340I come from 3 brands — WJB / INMOTION PARTS, NATIONAL and ÜRO PARTS.

This group includes NATIONAL 710746, ÜRO PARTS 27107546667 and WJB / INMOTION PARTS WS710746 and the remaining parts above.

This table covers the Transfer Case Overhaul kits. Read more

This group shows a single part: REIN RVK0002.