Timing Chain Replacement Kit, Rein - F22 228i, F30 328i, F32 428i, Z4 28i N20/N26 RWD

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.

The Rein kit covers the oil pump chain and sprocket assembly, which requires dropping the oil pan so a new gasket and hardware is included.

Kit contents:

1x11318648732, engine timing chain
1x11317592877, lower timing chain guide rail (& chain tensioner)
1x11317592850, upper timing chain guide rail (slide rail)
1x11318685091, timing chain tensioner
2x07129903192, upper guide rail bolts, M6x35
2x11317584170, guide rail bearing bolts w/ threadlocker
1x11317592878, guide rail bearing bolts w/o threadlocker
1x11317502048, cylinder head screw plug w/ washer
2x11117558632, engine block screw plugs w/ washers
1x11317603944, crankshaft sprocket
1x11217614270, crank bolt
1x11237600595, crank bolt washer (MT only)
1x11118618864, crank seal
1x11658612575, wastegate hardware kit
1x11127588418, valve cover gasket
1x11127588417, air breather hose
1x11127507217, vacuum pump seal
1x11377502022, Valvetronic actuator seal
1x13537585426, high pressure fuel feed pipe
2x13517632572, HPFP mounting screws w/ threadlocker M6x25
3x07129903926, belt tensioner bolts M6x30
1x11417605366, oil pump chain module
1x11277619309, oil pump sprocket bolt
1x11277606092, balance shaft lock plug
1x11417589016, oil pump pickup tube
1x07119905400, oil pickup bolt w/ washer M6x25
3x07129905537, oil pump chain module screws M6x30
1x11137627512, oil pan gasket
3x07119905400, oil level sensor bolts
2x11137603830, oil pan bolts (with threadlocker)
20x11137603833, oil pan bolts

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

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.

Manual Transmission note: the front crank hub had two versions, with laser anti-slip etching or with a separate anti-slip grip disc (washer). This kit includes a new grip disc but it can only be used with a non-etched crank hub. Do not mix a grip disc with a laser-etched hub!

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.