What are the differences in the harmonic balancer and pulley assembly on BMW Z4?

Depending on the date of manufacture, models have a two-piece harmonic balancer and pulley, or a one-piece combination of the two. Should the pulley hub be removed from the engine, a new retaining bolt has to be applied during assembly on which torque wrench of 302 ft-lbs / 410 Nm is to be applied. Initially, you can then remove the engine splash shields, viscous cooling fan/electric cooling fan and fan cowl assembly and drivebelts. It should be understood that there can be two types of external appearance of the harmonic balancer/pulley and hub: bolted two-piece and integral one-piece. In case of two-piece assembly, remove the retaining bolts that secure the harmonic balancer/pulley to the hub and lock the hub if required. Remove the small nut on the hub using the right tools to avoid causing harm or incurring too much loss, then pull out the hub from the crankshaft; if it is tight, use a puller to do so. To assemble the components and to dismantle the one-piece assembly, the following procedures should be followed: Before trying to remove the central bolt of the hub, the hub must be immobilized with specified tools; the same method has to be applied while withdrawing the hub. If the pulley hub has been pulled out, then it may be necessary to fit a new oil seal in the lower timing chain cover. If a Woodruff key is used, replace it and position the groove in the pulley hub over the key and slide it onto the crankshaft, then replace the washer and a new hub bolt. Torque the holding tool to the pulley hub and the hub bolt to the specified value for the two-piece assembly and replace the harmonic balancer/pulley with proper engagement of the locating dowel. For the one-piece assembly, secure the hub and fasten the bolt to the recommended torque. Last but not least, reset drivebelts, viscous cooling fan and cowl, and engine splash shields if any.

Genuine BMW Z4 Harmonic Balancer

Engine Harmonic Balancer

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10 Harmonic Balancers found

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BMW Z4 Vibration Damper
Part Number: 11238679073
$525.59 MSRP: $782.55
You Save: $256.96 (33%)
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Product Specifications
- Other Name: Damper Pulley
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2020 BMW Z4 | sDrive30i(G29)
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BMW Z4 Vibration Damper
Part Number: 11237519629
$530.49 MSRP: $789.84
You Save: $259.35 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006-2011 BMW Z4 | Coupe 3.0si(E86), Roadster 3.0i(E85), Roadster 3.0si(E85), sDrive30i(E89)
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BMW Z4 Vibration Damper
Part Number: 11235A3CF02
$525.59 MSRP: $782.55
You Save: $256.96 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Damper Pulley
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2021-2025 BMW Z4 | 4 Cyl 2.0 L GAS
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BMW Z4 Crank Pulley Vibration Dampner
Part Number: 11237564969
$530.49 MSRP: $789.84
You Save: $259.35 (33%)
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Product Specifications
- Other Name: Vibration Damper
- Replaces: 11-23-7-546-108
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006-2011 BMW Z4 | Coupe 3.0si(E86), Roadster 3.0i(E85), Roadster 3.0si(E85), sDrive30i(E89)
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BMW Z4 Vibration Damper
Part Number: 11238650741
$656.98 MSRP: $978.17
You Save: $321.19 (33%)
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Product Specifications
- Replaced by: 11239846660
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2020-2024 BMW Z4 | 6 Cyl 3.0 L GAS, M40i(G29)
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BMW Z4 Vibration Damper
Part Number: 11237624103
$428.06 MSRP: $631.88
You Save: $203.82 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Damper & Pulley, Pulley
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2016 BMW Z4 | sDrive28i(E89)
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BMW Z4 Vibration Damper
Part Number: 11239846660
$656.98 MSRP: $978.17
You Save: $321.19 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Damper Pulley
- Replaces: 11-23-8-638-534, 11-23-8-650-741
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2020-2025 BMW Z4 | 6 Cyl 3.0 L GAS, M40i(G29)
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BMW Z4 Vibration Damper
Part Number: 11237572788
$441.39 MSRP: $524.86
You Save: $83.47 (16%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Damper & Pulley
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2016 BMW Z4 | sDrive35i(E89), sDrive35is(E89)
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BMW Z4 Vibration Damper
Part Number: 11237597422
$428.06 MSRP: $631.88
You Save: $203.82 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Damper & Pulley, Pulley
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2016 BMW Z4 | sDrive28i(E89)
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BMW Z4 Engine Harmonic Balancer
Part Number: 11237513862
$608.27 MSRP: $719.56
You Save: $111.29 (16%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Vibration Damper; Damper & Pulley
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2003-2005 BMW Z4 | 2.5i(E85), 3.0i(E85)

BMW Z4 Harmonic Balancer

The BMW Z4 Harmonic Balancer smooths crankshaft rotation, protects important engine parts, and refines throttle feel. Devised with a weighted steel ring, a tough elastomer layer, and precision hub, this Harmonic Balancer has garnered praise for rock solid durability trusted by loyal BMW drivers. Because of its straightforward compatibility with E85 and E86 BMW roadsters, the muscular Z4 M, plus today's sDrive30i and sDrive35i models, one Harmonic Balancer will work on virtually every Z4 without bother. The Harmonic Balancer reduces vibrations from the inline six-cylinder engine. Therefore, the serpentine belts are able to stay aligned when the crankshaft is turning. This allows the alternator to produce constant voltage output. Moreover, the steering system receives the right amount of hydraulic fluid. Finally, the air conditioning unit cools beyond all expectations. It is able to do all this while reducing overall stress on the crankshaft nose. More significantly, this stability translates into tangible performance benefits. The engine revs freely because it is not fighting hidden shake. Therefore, any Z4 now sprints harder, and this also helps prolong the life of components throughout the BMW powertrain. The risk of sudden slips triggered by spirited driving overheating the engine is reduced due to smooth motion of the belt. When it comes to installation, no exotic tools are required and the timing marks remain visible. The multi-groove pulley is integral so it doesn't take up too much space, allowing the Harmonic Balancer to slide into the tight bay that makes a BMW feel sporty. The Harmonic Balancer utilizes tuned mass and rubber compounds that allow it to be applied in naturally aspirated and turbocharged variants. As a result, it keeps the exhaust note that is characteristic of every Z4 but keeps cabin vibrations to a low hum. Owners report the Harmonic Balancer consistently retains its like-new refinement even after high mileage, allowing the Z4 to remain a well-balanced sports car icon that reinforces the BMW commitment to everyday dependability.

If you are looking for OEM BMW Z4 Harmonic Balancer, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW Z4 Harmonic Balancer that come backed by the manufacturer's warranty.

BMW Z4 Harmonic Balancer Parts Questions & Experts Answers

Engine Harmonic Balancer
11237513862
Q:
What are the differences in the harmonic balancer and pulley assembly on BMW Z4?
Posted by Jhon V.
A:
Depending on the date of manufacture, models have a two-piece harmonic balancer and pulley, or a one-piece combination of the two. Should the pulley hub be removed from the engine, a new retaining bolt has to be applied during assembly on which torque wrench of 302 ft-lbs / 410 Nm is to be applied. Initially, you can then remove the engine splash shields, viscous cooling fan/electric cooling fan and fan cowl assembly and drivebelts. It should be understood that there can be two types of external appearance of the harmonic balancer/pulley and hub: bolted two-piece and integral one-piece. In case of two-piece assembly, remove the retaining bolts that secure the harmonic balancer/pulley to the hub and lock the hub if required. Remove the small nut on the hub using the right tools to avoid causing harm or incurring too much loss, then pull out the hub from the crankshaft; if it is tight, use a puller to do so. To assemble the components and to dismantle the one-piece assembly, the following procedures should be followed: Before trying to remove the central bolt of the hub, the hub must be immobilized with specified tools; the same method has to be applied while withdrawing the hub. If the pulley hub has been pulled out, then it may be necessary to fit a new oil seal in the lower timing chain cover. If a Woodruff key is used, replace it and position the groove in the pulley hub over the key and slide it onto the crankshaft, then replace the washer and a new hub bolt. Torque the holding tool to the pulley hub and the hub bolt to the specified value for the two-piece assembly and replace the harmonic balancer/pulley with proper engagement of the locating dowel. For the one-piece assembly, secure the hub and fasten the bolt to the recommended torque. Last but not least, reset drivebelts, viscous cooling fan and cowl, and engine splash shields if any.
Answered by BMW Parts Specialist Chaz / Apr 30, 2023

Genuine BMW Z4 Harmonic Balancer

10 Harmonic Balancers found

BMW Z4 Harmonic Balancer

BMW Z4 Harmonic Balancer Parts Questions & Experts Answers

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