Manual Window Regulator 3717250002

To Replace:

Mercedes Benz

For Vehicle:

NG 2521 LH

Part No.:

3717250002

3817250002

Tinzer No.

9C-L

Introduction
factory

The 3717250002 is a heavy-duty manual window regulator (window lifter) specifically designed for the Mercedes-Benz LN2 and early LK/LN series commercial vehicles. TinzerMotor manufactures this part as a high-strength aftermarket solution, focusing on mechanical precision and long-term reliability for vocational and regional transport trucks.

Technical Information & Application

This assembly is the core mechanical structure responsible for the manual operation of the window via a hand crank in medium and heavy-duty cabins.

Part Number: 3717250002 / A3717250002
Primary Application: Designed for Mercedes-Benz LN2 (Light Series 2) and LK (Leichte Klasse) series trucks (e.g., 709, 814, 917, 1117, 1317 models).
Position: Front Left (Driver Side).
Mechanism Type: Manual (Hand-crank operated), utilizing a robust scissor-arm or single-rail guide system designed for high-cycle manual use.
Material: Manufactured from heavy-gauge, cold-rolled galvanized steel to resist bending and deformation, ensuring the glass remains aligned even during high-vibration truck operations.

Interchange / Cross-Reference Numbers

The 3717250002 is a standard industry reference found in various global truck catalogs:

Mercedes-Benz OEM: 371 725 00 02, A371 725 00 02, A3717250002
DT Spare Parts: 4.62912
Febi Bilstein: 101407
Trucktec: 01.53.027
Meyle: 034 072 0010

TinzerMotor High Quality & Testing

TinzerMotor specializes in heavy-duty window systems, ensuring that their 3717250002 manual regulator provides "OEM-plus" performance through advanced engineering and rigorous quality control.

Precision Smooth-Glide Technology: TinzerMotor utilizes low-friction polymer sliders and industrial-grade internal lubricants. This ensures the window remains exceptionally easy to crank, preventing the mechanical "stiffening" often seen in lower-quality alternatives after exposure to dust and dirt.
Reinforced Structural Design: Every unit features thick-walled steel rails and high-tensile fasteners. This prevents the mechanism from rattling or losing alignment, even after years of use on rough roads.
Rigorous Reliability Testing:

Mechanical Cycle Validation: Each design is tested to withstand over 20,000 full-stroke operations, ensuring the crank gears and internal pivot points do not wear out or strip.
Anti-Corrosion Treatment: All components receive an 8-stage anti-corrosive coating (Salt Spray Tested), protecting the regulator from moisture and road salt ingress within the door cavity.
OEM Fitment Guarantee: Manufactured to exact 1:1 OEM specifications, ensuring the manual handle spindle and mounting bolts align perfectly with the original door panel.

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