Timing Chain Replacement Kit - F22 228i, F30 328i, F32 428i, Z4 28i N20/N26 RWD
Timing Chain Replacement Kit - N20/N26 - Genuine BMW Components - NOT for xDrive Models
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 Z4 28i RWD 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 RWD (Rear 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)
11127588418 - Valve Cover Gasket
11118618864 - Front Crankshaft Seal
11217614270 - Bolt for Crank Pulley
11277619309 - Bolt for Oil Pump Sprocket
11137627512 - Oil Pan Gasket
11137603833 - Bolts for Oil Pan (20x)
11137603830 - Bolts for Oil Pan (2x)
11117558632 - Screw Plugs for Timing Cover (2x)
11317502048 - Screw Plug for Timing Cover
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
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.
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.
F22 / F23 (2014+) > 228i
F30 / F31 / F34 (2012+) > 320i
F30 / F31 / F34 (2012+) > 328i
F32 / F33 / F36 (2014+) > 428i
F10 / F11 (11-16) > 528i N20 (2012-2016)
E84 X1 (2013-2015) > X1 28i
E89 Z4 (2009-2016) > Z4 sDrive28i