BMW 1378651 Windshield Wiper Transmission Motor 621-53964

( Manufacturer Part Number: 1378651 ), ( Conditions Options: Sedan, E32 ), ( Genuine Oem: Yes ), ( Ipn: 621-53964 ), ( Warranty: 60 Day ), ( Placement On Vehicle: Front ), ( Type: Wiper Transmission )

Review BMW Sedan Windshield Wiper Transmission And Motor fits 735I E32 1988–1989

The **BMW 735i E32 Windshield Wiper Transmission Motor (Part Number: 1378651, Model Years: 1988 1989)** is a precision-engineered component designed to deliver reliable, high-performance operation for the iconic BMW E32 sedan. This transmission motor is a critical part of the vehicle s wiper system, responsible for converting electrical signals into mechanical motion to ensure smooth, synchronized operation of the windshield wipers. Built to meet BMW s stringent quality standards, this motor features a robust, durable construction with a compact yet efficient design tailored specifically for the E32 s aerodynamic and performance-oriented architecture. The unit incorporates a high-torque output mechanism, allowing for consistent wiping patterns even under varying weather conditions, from light rain to heavy snow. Its seamless integration with the wiper linkage ensures minimal vibration and noise, maintaining the E32 s signature blend of luxury and driving refinement. Compatible exclusively with the 1988 and 1989 model years of the 735i, this part is a direct-fit replacement, ensuring compatibility with the original wiring harness and mounting points without the need for modifications. Whether restoring a classic E32 to its former glory or addressing a malfunction in an existing system, this transmission motor guarantees dependable performance, helping to preserve the vehicle s legendary driving dynamics and aesthetic appeal.

### **Pros and Cons of Buying a 1988-1989 BMW 735i (E32) Windshield Wiper Transmission Motor (Part #1378651)**

1. **Compatibility and Fitment** This part is specifically designed for the 1988-1989 BMW 735i (E32) model, ensuring an exact fit without modification. It is a direct replacement for the original wiper transmission motor, which may have failed due to wear, electrical issues, or corrosion.

2. **Reliability of BMW Components** BMW parts, even aftermarket or OEM replacements, are generally built to high standards. A new or reconditioned wiper motor should function reliably, reducing the risk of intermittent failures or complete breakdowns.

3. **Prevents Further Damage** A failing wiper motor can cause the wiper linkage or blades to become misaligned or stuck, potentially damaging the windshield or interior components. Replacing it proactively avoids secondary issues.

4. **Improved Functionality** If the original motor was malfunctioning (e.g., slow operation, erratic movement, or complete failure), a new one restores proper wiper performance, ensuring clear visibility during rain or snow.

5. **Potential Cost Savings** Replacing just the motor is often cheaper than buying a used E32 with a known wiper issue. Labor costs for installation are also relatively low compared to a full vehicle purchase.

6. **Aftermarket Availability** This part is widely available from BMW dealers, specialty auto parts stores, or online retailers (e.g., RockAuto, eBay, or BMW-specific suppliers). Options include new, reconditioned, or remanufactured units.

7. **Ease of Installation** The wiper motor in the E32 is accessible and relatively straightforward to replace, requiring basic mechanical skills and standard tools. Many owners or mechanics can handle the job in a few hours.

---

1. **Age and Wear of Related Components** Even with a new motor, other parts of the wiper system (e.g., linkages, brackets, or wiring) may be worn or corroded. If these are neglected, the new motor may fail prematurely or perform poorly.

2. **Electrical Issues** The E32 s wiring harness can degrade over time, leading to intermittent power delivery to the motor. A new motor may not function correctly if the electrical system is faulty. A thorough inspection of wiring and connections is recommended.

3. **Cost of the Part** While cheaper than buying a used E32, the motor itself may cost between **$100 $300**, depending on whether it s new, reconditioned, or remanufactured. Prices can vary based on supplier and condition.

4. **Labor Time and Complexity** If the owner lacks mechanical experience, the installation process (which involves disconnecting the wiper arms, removing the cowl panel, and replacing the motor) could be time-consuming or frustrating. Professional labor may add **$100 $200** to the cost.

5. **Potential for Counterfeit Parts** Purchasing from untrusted sources (e.g., unknown online sellers) risks receiving a low-quality or incompatible part. Always buy from reputable suppliers and verify part authenticity.

6. **Underlying Vehicle Condition** Replacing just the motor does not address other potential issues in the E32, such as suspension wear, electrical gremlins, or engine problems. Buyers should ensure the rest of the car is in decent condition before committing.

7. **Limited Longevity of Aftermarket Parts** While high-quality aftermarket motors can last, they may not match the durability of an OEM unit. Some owners report shorter lifespans compared to original BMW components.

---

### **Conclusion**

Replacing the wiper transmission motor (part #1378651) in a 1988-1989 BMW 735i (E32) is a **practical and cost-effective solution** for restoring wiper functionality. The part is widely available, relatively easy to install, and significantly improves visibility and safety. However, it is not a standalone fix buyers must also address potential electrical issues, linkage wear, or other mechanical problems in the wiper system.

If the primary goal is to **restore wiper operation without investing in a full vehicle**, this replacement is a smart choice. However, if the E32 has multiple unresolved issues, it may be more economical to either repair those problems first or consider other options (e.g., selling the car or trading parts).

---

### **Recommendation**

1. **Verify the Part** Confirm that the motor is compatible with your specific E32 model year (1988-1989) and that it is either **OEM, remanufactured, or from a trusted aftermarket supplier** (e.g., BMW MOTORWERK, Dorman, or a reputable online retailer).

2. **Inspect Related Components** Before installation, check the **wiper linkages, brackets, wiring harness, and ground connections** for corrosion or damage. Clean or replace any faulty components to ensure long-term reliability.

3. **Test the New Motor** After installation, thoroughly test the wiper operation in all modes (low, high, intermittent) to confirm proper function. Listen for unusual noises or resistance.

4. **Consider Professional Installation** If unsure about the installation process, have a **BMW specialist or experienced mechanic** perform the replacement to avoid mistakes that could void warranties or cause further damage.

5. **Budget for Additional Repairs** If the E32 has other known issues (e.g., suspension, electrical, or engine problems), prioritize addressing those before or alongside the wiper motor replacement to maximize the vehicle s usability.

6. **Explore Alternatives if Needed** If the E32 has severe issues beyond the wiper motor, weigh the cost of repairs against the car s value. In some cases, selling parts or trading the vehicle may be more practical than extensive restoration.

**Final Verdict:** **Proceed with the replacement** if the goal is to fix a specific wiper failure at a low cost. However, approach it as part of a broader assessment of the vehicle s condition to avoid future disappointments.

Details:

Warranty covers the base component and none of other attached parts. Many electronic modules and components require programming. Donor Vehicle: model: 735I. BMW 735I E32 SEDAN Windshield Wiper Transmission Motor Fits 1988 1989 88 89: Review photos this is your actual part.

These extra attached parts are not covered by any warranty. Stock #: 255506. Miles: 167000 - N/A or Unknown. Major components are stamped and may have heat sensitive tabs attached to indicated overheating that would void warranty.

Parts are not covered for external fluid leaks.

part #: 1378651 prices

• $67.88-$84.99

specifications winshielwip:

• for models: 735i, E32
• for makes: Bmw
• for years: 1988-1989
• mpn: 1378651
• conditions options: Sedan, E32
• genuine oem: Yes
• ipn: 621-53964
• warranty: 60 Day
• placement on vehicle: Front
• type: Wiper Transmission

seller winshielwip:

• city: Port Washington, Wisconsin
• # reviews: 10141
• rating: 99.3%

offer winshielwip:

• best offers: True
• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: February 3, 2026
• quantity: 1

returns winshielwip:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

shipping winshielwip:

• service: Standard
• transit: 2-6 Days
• type: Fixed
• class: Standard
• cost: $0.00

payments winshielwip:

• wallet: Apple-pay
• other
• credit card: Discover

general winshielwip:

• condition: Used
• Exterior Parts Accessories > Wipers Washers > Wiper Linkages, Transmissions Motors

Bmw 1378651 Is Similar To:

• 1350152 8157 Bmw Tii Wiper Stalk Stock Used Very Hard To Find (28.4% similar) Good shape see pics hard to find and new this one is probably a 73...(April 12th, 2019)
• 546431 610251 821459 Bmw 2002 2002tii Vintage Windshield Wiper Arm Lot Alpina Beamer (37.4% similar) Both sets of arms are nice usable condition, could use a cleaning and polishing. 2002 , 2002 Ti, Alpine, Bavaria, beamed, included, as pictured, 2 sets of wiper arms and one set of used wiper blades. Made in England. Here is a collection of vintage, early bmw wiper parts, will fit many years and ...(July 9th, 2016)
• 61611352194 Bmw Vintage Nos Wiper Drive Shaft (27.3% similar) This is a new old stock windshield wiper drive shoat for the varieties of vintage bmw vehicles. This part is an original from the 70S made to specs of pieces. This part is included with its original box which does have some wear on. These components have been re released by bmw, but with variations ...(April 18th, 2018)
• 61611359121 Genuine Bmw Windshield Wiper Set (33.6% similar) 0CSI, coupe, M30, manual, Eur, 7031: wiper arm BLADE2. 0CS, coupe, M30, auto, Eur, 3432: wiper arm BLADE2. 5CS, coupe, M30, auto, Eur, 7003: wiper arm BLADE2. 0CSIL, coupe, M30, manual, Eur, 7071: wiper arm blade part 5 was found on the following E21 VEHICLES:3' E21, 315, sedan, M10, 1701 BLADE3' ...(March 23rd, 2018)
• 61611383432 Bmw Genuine Wiper Axle Cover (31.5% similar) Oil filters, brake pads, windshield wipers, etc. Have a 60 day, unlimited mile warranty. This is for a genuine bmw wiper axle cover. Warranty: all bmw parts have a 2 years, unlimited mile warranty with the exception of wear and tear items ex. All bmw accessories apparel, toys, license plate frames, ...(August 16th, 2018)
• 6161.8644.143 6161.8644.142 Bmw 1500 1600 2002 2002tii Chrome Windshield Wiper Arms 1966 67 68 69 70 71 72 (40.4% similar) Some minor pitting in the chrome and some surface rust on the springs...(November 15th, 2016)
• 61611353572 61611353572 Bmw Wiper Motor (23.8% similar) Bmw wiper motor...(May 19th, 2016)
• 61618644143 61618644142 Bmw 1967-72 1600 1602 1802 2002 2002tii Windshield Wiper Arms Pair (35% similar) Vintage set of early chrome bmw 02 windshield wiper arms. These are not perfect but in very good overall condition. Tension springs in back have some minor rust but are still nice and solid. Fits 1602, 1802, 2002 2002 TI 2002 TII will probably fit the later 74, 75, 76 cars also. You get both ...(May 23rd, 2016)
• 69-76 Bmw Cs Cp Reman Wiper Motor 0 390 341 056 (38.8% similar) A remanufactured original wiper motor for your classic bmw cs coupe, free us shipping...(April 9th, 2016)
• Bmw 67637237062 6763-7237062 6763-7-237-062 2011-2017 X3 Rear Hatch Wiper Motor 7237062 (27.3% similar) Part fitment and compatibility. Please here to view details 2011 -2017 bmw x3 - rear hatch wiper motor 7237062: condition notes this part comes as shown in the picture...(August 8th, 2023)
• Bmw 3397021478 7350657-08 7350657 0390243525 0399401538 2016-2021 X1 F48 Front Windshield Wiper Motor With Linkage Oem (42% similar) 2016-2021 bmw x1 F48 front windshield wiper motor with linkage oem...(August 16th, 2023)