2024 BMW Auxiliary Water Pump Return Bulletin TEC835

Important Warning for Dealers

BMW has issued a critical directive regarding auxiliary water pump inventory. Affected available inventory must not be sold. This means any auxiliary water pump with the incorrect part number must be identified and returned immediately to prevent installation in customer vehicles.

What's the Issue?

BMW Parts Bulletin TEC835, dated February 03, 2026, highlights an issue with certain auxiliary water pumps in dealer inventory. These parts, identified by the primary part number 11 51 8 663 248, contain an incorrect component inside their packaging. This bulletin ensures that only auxiliary water pumps with the correct internal component, part number 8663248, are used for repairs and service. The 2024 BMW 430i auxiliary water pump, along with those for other models, is subject to this inspection.

Identifying Affected and Correct Auxiliary Water Pumps

The bulletin provides visual guidance to distinguish between the incorrect and correct auxiliary water pumps. The primary part number for the assembly that needs to be returned is 11 51 8 663 248.

Incorrect Parts (NOT OK)

The physical pump component identified as incorrect has the part number 8 638 237 04 stamped on it. These pumps are to be returned.

Correct Parts (OK)

The physical pump component identified as correct has the part number 8 663 248 02 stamped on it. Packages containing the correct part number 8663248 are acceptable for use.

Dealer Return Procedure for TEC835

BMW AG has requested the inspection and return of all affected auxiliary water pump part number 11 51 8 663 248. Dealers must follow a specific process to return these parts:

• Return Location: All affected part(s) must be returned to the facing Regional Distribution Center (RDC).
• Claim Submission: Submit for return using a YR26 damage claim.
• Order Reason: The order reason for the claim must be BM2.
• Claim Details: A valid BMW delivery and delivery item number must be entered in the claim. The bulletin number TEC835 must explicitly appear in the text of the TEC claim.
• Assistance: If the delivery number cannot be located, an IDS ticket should be submitted to Parts Logistics>Returns>Claims>Quality>Claims for assistance.
• Reordering: Dealers are advised to reorder the same part number if needed, ensuring the correct version is supplied.

Deadlines for TEC835

This bulletin, TEC835, is valid from February 03, 2026, through February 17, 2026. The deadline for filing a claim under TEC835 is February 17, 2026. All affected parts must be returned to the Regional Distribution Center no later than March 03, 2026.

What Owners Should Know

This BMW Parts Bulletin TEC835 is an internal communication primarily for BMW dealerships and parts departments. It addresses the quality control of parts inventory and is not a recall for vehicles already sold or currently on the road. Owners of 2024 BMW 430i, X3, or 330i vehicles do not need to take immediate action based on this bulletin. However, it ensures that if your vehicle requires an auxiliary water pump replacement, the dealership will install a correctly manufactured part. If you have concerns about a recent auxiliary water pump replacement, you may contact your authorized BMW service center.

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Source: NHTSA ID: 11029013