HomeTransmission > Transmission Hard PartsTC Remanufacturing BM52 Automatic Transmission Torque Converter
Part #: BM52

TC Remanufacturing BM52 Automatic Transmission Torque Converter

3 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$270.92Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: BMW, 530i
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of TC Remanufacturing BM52 Torque Converter

The TC Remanufacturing BM52 automatic transmission torque converter is designed specifically for BMW 530i models. Engineered as a standard replacement part, it offers reliable performance with precise fitment to ensure smooth transmission operation.

  • Bolt Circle Diameter: 9.25 inches
  • Converter Diameter: 10.43 inches
  • Mounting Plate with Captive Nuts for secure installation
  • Slotted/Stepped Hub Type for accurate engagement
  • Lock-Up Feature Included for improved fuel efficiency
  • Mounting Thread Size: 10mm x 1.0
  • Drive Plate with 3 Pads and Nuts for stable mounting
  • Pilot Diameter: 0.627 inches and Pilot Length: 1.115 inches
  • Spline Count: 27
  • Slight High Stall for enhanced torque transfer

Detailed Product Description

The BM52 torque converter from TC Remanufacturing is tailored for the BMW 530i automatic transmission system. Its 10.43-inch diameter and 9.25-inch bolt circle ensure compatibility with the vehicle’s transmission housing. The mounting plate includes captive nuts, simplifying alignment and securing the converter firmly in place. Featuring a slotted and stepped hub type, this torque converter provides precise spline engagement with 27 splines, ensuring smooth power transfer.

Equipped with a lock-up clutch, the BM52 helps reduce slippage at cruising speeds, contributing to better fuel economy and reduced heat generation. The mounting thread size of 10mm x 1.0 and the drive plate with three pads and nuts provide a stable and secure connection to the transmission. The pilot diameter and length are designed to match the BMW 530i’s specifications, ensuring proper alignment and fitment.

Common Applications and Issues Addressed

  • Replacement for worn or damaged torque converters in BMW 530i automatic transmissions
  • Resolves slipping or shuddering during acceleration
  • Addresses lock-up clutch failure affecting fuel efficiency
  • Corrects improper spline engagement causing vibration or noise
  • Improves stall characteristics for smoother torque delivery

Installation Notes and Tips

When installing the BM52 torque converter, ensure the mounting plate with captive nuts is properly aligned with the transmission housing bolt circle of 9.25 inches. Verify the spline count of 27 matches the transmission input shaft. The lock-up clutch requires careful handling to avoid damage during installation. Confirm the pilot diameter and length fit securely to maintain proper alignment. Use the specified mounting thread size of 10mm x 1.0 to torque bolts to manufacturer specifications.

Quality Assurance and Warranty

TC Remanufacturing produces the BM52 torque converter to meet OEM standards for durability and performance. This standard replacement part undergoes rigorous testing to ensure reliable operation within BMW 530i automatic transmissions. Warranty details are provided by TC Remanufacturing and should be confirmed at the time of purchase.

BrandTC Remanufacturing
Part NumberBM52
Bolt Circle9.25
Converter Codes000 243
Converter Diameter10.43
Fitment NoteMounting plate with captive nuts
Grade TypeStandard replacement
Hub TypeSlotted/stepped
Lock Up TypeYes
Mounting Thread Size10mm x 1.0
Mounting TypeDrive plate 3 pads w nuts
Pilot Diameter0.627
Pilot Length1.115
Spline Count27
StallSlight high

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2006BMW530i3.0LL6N/AFitment Note:Mounting Plate With Captive Nuts
2005BMW530i3.0LL6N/AFitment Note:Mounting Plate With Captive Nuts
2004BMW530i3.0LL6N/AFitment Note:Mounting Plate With Captive Nuts

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.