This is a Timing Chain Replacement Kit as referenced by BMW for the N20 and N26 engines found in many 2012-2016 BMW 228i/328i/428i/528i and X3/X4 28i AWD models. The N20 and N26 engines are known to have a problem with the timing chain and guides that were originally installed at the factory. The timing chain can develop slack that causes rapid wear on the sprockets and plastic guides. If not addressed, this issue can lead to major engine problems.
This package contains the same replacement items that the dealers use under the factory Service Bulletin (SIB11 03 17), including the oil pump chain and sprocket. Check with your dealer to see if your car is eligible for this factory timing chain repair. Or if you're out of warranty this kit contains all of the same components for a independent replacement using Genuine and OEM suppliers.
Only For AWD (xDrive All Wheel Drive) Models
This kit includes the following Genuine BMW and OEM components:
11318648732 - Timing Chain
11317592877 - Timing Chain Tensioner
11317592850 - Timing Chain Guides
11417605366 - Oil Pump Drive Assembly (Chain, Guide, Sprockets, and Tensioner)
11277619309 - Bolt for Oil Pump Drive
11127588418 - Valve Cover Gasket
11118618864 - Front Crankshaft Seal
11217614270 - Bolt for Crank Pulley
11317603944 - Sprocket for Crankshaft
11137627511 - Oil Pan Gasket
11137603833 - Bolts for Oil Pan (16x)
11137603832 - Bolts for Oil Pan (4x)
11137603831- Bolts for Oil Pan (5x)
11317584170 - Guide and Tensioner Rail Pivot Bolt (2x)
11317592878 - Guide Rail Pivot Bolt
11117558632 - Screw Plugs for Timing Cover (2x)
11317502048 - Screw Plug for Timing Cover
11127588416 - Gasket for High Pressure Fuel Pump
13517632572 - Bolts for High Pressure Fuel Pump (2x)
12141748398 - O-Rings for Camshaft Sensors (2x)
11317603944 - Timing Chain Sprocket for Crankshaft
11417614770 - O-Ring for Oil Pump Pickup
11277606092 - Alignment Plug
11658612575 - Turbo Wastegate/Actuator Hardware Kit
The primary symptom of a timing chain problem is a whining noise while the engine is revved. Another telltale sign is excessive wear on the chain and the guides. You can have a peek at the chain and upper guide by removing the oil cap and looking through the oil fill hole on the valve cover.
Replacement of these requires the front timing covers, oil pan, and top valve cover to be removed. However, due to the depth of the job and intricacies with the timing systems (VANOS), only technicians with BMW experience should perform the work. Special tools and additional parts may be required.
Manual Transmission note: the front crank hub had two versions, with laser anti-slip etching or with a separate anti-slip grip disc (washer). The grip disc must only be used with a non-etched crank hub. This is why we don't include the grip disc in our kit - you may not need it if you have the laser-etched hub.
Buying Genuine BMW parts will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.
Don't forget to order an oil change kit! See below for a BimmerWorld recommended Inspection 1 Oil Change Package featuring Red Line full-synthetic oil and an OEM oil filter.
2 SeriesF22 / F23 (2014+) > 228i xDrive
3 SeriesF30 / F31 / F34 (2012+) > 320i xDrive
F30 / F31 / F34 (2012+) > 328i xDrive
4 SeriesF32 / F33 / F36 (2014+) > 428ixDrive
5 SeriesF10 / F11 (11-16) > 528i xDrive N20 (2012-2016)
X1 SeriesE84 X1 (2013-2015) > X1 28i xDrive
X3 SeriesF25 X3 28i xDrive
X4 SeriesF26 X4 28i xDrive
