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BMW E93 M3 Rod Bearings

BMW E93 M3 Rod Bearings Rod bearings continue to be a sore subject among M3, M5, and M6 owners. The rod bearings in the S54 I6, S85 V10, and S65 V8 have been known to fail within 60,000 miles. There could be a number of reasons for premature failure with a lot of finger-pointing as to the real cause. Whatever the reason, rod bearings are wearing out sooner than expected and their replacement should be considered a required preventative maintenance item. We suggest a replacement interval of between 60,000-80,000 miles with frequent engine oil analysis done along the way. Driving moderately and allowing the engine to warm up before hard use will also extend rod bearing life. Our rod bearings and overhaul kits are developed with input from our own service department and we offer everything needed to replace the bearings. In most cases removing the subframe, and supporting the engine from above, is the best method to access the bearings. Professional installation or previous experience is very strongly recommended.
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E9X M3 Rod Bearing Set Rod bearings should be replaced as a preventative measure before 80,000 miles. This is the set of rod bearings for the S65 V8 in the E90/E92 M3 (BMW part numbers 11247841703 and 11247841702). This is just the set of bearings and does not include any of the other items that need to be replaced at the same time (connecting rod bolts, oil pan gasket, hardware, etc). Click here for our complete rod bearing overhaul kit.

Rod bearings continue to be a sore subject among M3, M5, and M6 owners. The rod bearings in the S65 V8 have been known to fail within 60,000 miles. There could be a number of reasons for premature failure with a lot of finger-pointing as to the real cause. Whatever the reason, rod bearings are wearing out sooner than expected and their replacement should be considered a required preventative maintenance item. We suggest a replacement interval of between 60,000-80,000 miles with frequent engine oil analysis done along the way*. Driving moderately and allowing the engine to warm up before hard use will also extend rod bearing life.

* BMW released an updated rod bearing around 2011 that uses different materials than the original design. The old rod bearings were constructed with several layers or metal, including copper and lead. If an engine oil analysis revealed high levels of these specific metals then it was a sure sign that the rod bearings were nearing replacement. However, the new BMW bearings do not use copper or lead so an oil analysis will not alert you to heavy bearing wear. The new bearings are also a harder material which prolonged the life of the bearing but increased the liklihood of crankshaft damage if a bearing failed. Even though the bearing theoretically lasts longer it's even more important to preventativly replace them before they damage the crankshaft.

This set fits the following BMWs:
2008-2011 E90 BMW M3 - Sedan
2008-2013 E92 BMW M3 - Coupe
2008-2013 E93 BMW M3 - Convertible
Packaged by Turner
Part #: TMS222796
Price: $479.20 (USD) 
Ships on May 24, 2018
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E9X M3 Rod Bearing Overhaul Kit

Rod bearings should be replaced as a preventative measure before 80,000 miles. This package is the most complete rod bearing overhaul kit available and includes not just the latest BMW rod bearings and connecting rod bolts, but also everything else that should be replaced with the oil pan and front subframe off the car.

Rod bearings continue to be a sore subject among M3, M5, and M6 owners. The rod bearings in the S65 V8 have been known to fail within 60,000 miles. There could be a number of reasons for premature failure with a lot of finger-pointing as to the real cause. Whatever the reason, rod bearings are wearing out sooner than expected and their replacement should be considered a required preventative maintenance item. We suggest a replacement interval of between 60,000-80,000 miles with frequent engine oil analysis done along the way*. Driving moderately and allowing the engine to warm up before hard use will also extend rod bearing life.

After doing so many rod bearing replacements in our own service shop we have put together this comprehensive overhaul package. Our package includes -

Genuine BMW rod bearings
- 11247841703, upper bearings - latest design from BMW (either original or WPC treated**)
- 11247841702, upper bearings - latest design from BMW (either original or WPC treated**)
- 11247834522, connecting rod bolts
- Red Line engine assembly lube

Oil Pan
- 11137841085, oil pan gasket
- 07129905537, oil pan screws (required by BMW)
- 07129905599, oil pan screws (required by BMW)
- 07129905600, oil pan screws (required by BMW)

Replacing the rod bearings requires mechanical knowledge and skill, a clean workspace, and several specialist tools. Our preferred procedure is to leave the engine in the car but remove the front subframe. The engine must be supported from above with an engine brace. Removing the front subframe involves disconnecting the control arms and steering rack and steering column. The oil pan can then be removed and you can access the connecting rods and bearings. Replacing the rod bearings themselves is straightforward but patience and forethought will be extremely helpful. In addition to analyzing the severity of the rod bearing wear, the crankshaft must also be inspected closely for damage. Rod bearings that have been severely worn may have damaged the crankshaft (requiring replacement or machining).

* BMW released an updated rod bearing around 2011 that uses different materials than the original design. The old rod bearings were constructed with several layers or metal, including copper and lead. If an engine oil analysis revealed high levels of these specific metals then it was a sure sign that the rod bearings were nearing replacement. However, the new BMW bearings do not use copper or lead so an oil analysis will not alert you to heavy bearing wear. The new bearings are also a harder material which prolonged the life of the bearing but increased the liklihood of crankshaft damage if a bearing failed. Even though the bearing theoretically lasts longer it's even more important to preventativly replace them before they damage the crankshaft.

** These WPC-treated bearings are the best we have seen for the S65. WPC is a shot-peening treatment at a microscopic level. It's perfect for sensitive surfaces like bearings. The WPC treatment removes imperfections and high spots, while creating a surface that retains oil better than the original surface. This greatly reduces friction. The bearings in this kit are factory BMW bearings that are sent to WPC for treatment. The treated bearings are stronger with less metal fatigue and less friction than buying off-the-shelf bearings from the dealer.

***BE Bearings is another top pick when considering which bearing kit to choose. Working with Clevite, an OE bearing supplier, their design allows for a bit more clearance than stock, allowing better oil circulation and reducing friction. The material is also made from the original bearing composition of lead-copper, not the updated tin-aluminum used in factory BMW bearings which was excessively hard, potentially damaging the crankshaft when high friction occurred. This softer metal composition can also be tested for via oil analysis, allowing you to see high bearing wear, something the tin-aluminum bearings don't give you the ability to do.

Front Subframe Hardware
Our preferred procedure for accessing the engine block is by disconnecting the control arms and steering rack and then removing the front subframe altogether. This hardware is not required but may be a good idea, especially if your original subframe bolts are rusty. Hardware includes:
31106769907, front subframe mounting bolts
31106769908, front subframe mounting bolts
33326768354, front subframe mounting bolts
33326760668, front wishbone collar nut

Tie Rod Boots
32106765234, tie rod boot kit (x2)

Motor Mounts with Hardware
11812283798, motor mounts (x2)
33306760587, motor mount nuts (x4)

Engine Oil Change
83212365944, BMW 10W-60 engine oil
11427837997, Mahle OEM oil filter.

This package fits the following BMWs:
2008-2011 E90 BMW M3 - Sedan
2008-2013 E92 BMW M3 - Coupe
2008-2013 E93 BMW M3 - Convertible

Packaged by Turner
Part #: TMS222795
Price: $676.80 (USD) 
Ships on May 24, 2018
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 BE Bearings Connecting Rod Bearing Upgrade Set - BMW S65

Designed and manufactured by Clevite to BE Bearing specifications.

These bearings replace the factory BMW rod bearings. The original BMW bearings have too little clearance, which leads to premature bearing wear and can cause early engine failure.  Furthermore, the factory BMW bearings are made from tin-aluminum which are 5-times harder than a softer lead-copper bearing design. A softer bearing is better for your engine and more tolerant of foreign particles suspended in your oil.

These BE Bearings feature a state-of-the-art Clevite Tri-Metal design with the Clevite Tri-Armor(tm) coating.

  • Lead-copper design for greater durability and easy tracking with oil analysis like Blackstone (recommended).
  • Designed with extra clearance to "fix" the BMW rod bearing design flaw.
  • Designed for use with factory 10W60 weight oils.
  • Tri-Armor coated for low conditions during cold start
  • Ideal for start-stop vehicles
  • Applicable for BMW engines S65B40
  • Standard Clearance
  • Sold as complete set (8-cylinders)

Fits the following BMWs:
2008-2013 E9X BMW M3 S65

BE Bearings
Part #: SP1527HKSTDS65
Price: $589.00 (USD) 
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BE Bearings Connecting Rod Bolt Upgrade Set - BMW S65B40

Designed by BE Bearings, manufactured by ARP.  These custom made rod bolts are designed to be used on BMW factory connecting rods.  BE Bearings worked with ARP to come up with custom rod bolt torque specifications to ensure minimal rod big end bore distortion.  Their bolts have been measured and verified to guarantee minimal bore distortion, and stay within the ARP torque specification.

Technical Details:

  • Composition:   ARP2000®
  • Yield strength:   200,000 PSI
  • Tensile strength:   220,000 PSI
  • Torque specification:   50 Ft/Lbs, or 0.0065-0.0070 inch stretch

Fits the following BMWs:
2008-2013 E9X BMW M3 S65

BE Bearings
Part #: BE-CRB50-S65
Price: $294.99 (USD) 
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E90/E92 M3 WPC Treated S65 Rod Bearings (Set)

These WPC-treated bearings are the best we have seen for the S65. WPC is a shot-peening treatment at a microscopic level. It's perfect for sensitive surfaces like bearings. The WPC treatment removes imperfections and high spots, while creating a surface that retains oil better than the original surface. This greatly reduces friction. The bearings in this kit are factory BMW bearings that are sent to WPC for treatment. The treated bearings are stronger with less metal fatigue and less friction than buying off-the-shelf bearings from the dealer.

Price is for a complete set of S65 upgraded rod bearings.

Packaged by Turner
Part #: 1247841703wpcKT
Price: $579.95 (USD) 
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