1. Windshield Wiper Systems For Sale
  2. sku: 14193747384580731
  3. SPRAGUE ST9/38-R

SPRAGUE ST9-38-R Air Push Wiper Motor ST9/38-R ST9/38-T

fits model: St9, H3. year: 1981.

Sprague St9/38-r Air-push Wiper Motor St9/38-t 2 81 Read Ad - See Pictures H3

( Brand: Sprague ), ( Manufacturer Part Number: ST9/38-R ), ( Part Type: Wiper Motor ), ( Vintage Part: Yes )

Review SPRAGUE St9/38-r Air push Wiper Motor St9/38-t Read Ad See Pictures fits ST9 H3 1981

The **Sprague ST9/38-R Air-Push Wiper Motor (ST9/38-T, 81H3)** is a high-performance, industrial-grade wiper motor engineered for demanding applications where reliability, durability, and precision are paramount. Designed with Sprague s signature engineering excellence, this motor combines robust construction with advanced pneumatic actuation to deliver consistent, high-torque performance in environments where traditional electric-driven systems may fall short. The **ST9/38-R** variant features an **air-push mechanism**, leveraging compressed air to drive the wiper arm with smooth, controlled motion, making it ideal for heavy-duty industrial, automotive, or aerospace systems where rapid, forceful wiping is required such as in windshield cleaning, dust removal, or protective panel maintenance. The motor s compact yet sturdy housing is built to withstand harsh conditions, including exposure to moisture, dust, and temperature fluctuations, ensuring long-term operational integrity.

At the heart of this motor lies a **high-efficiency pneumatic cylinder**, paired with Sprague s proprietary **81H3 actuator**, which provides precise stroke control and minimal wear over extended use. The **ST9/38-T** designation indicates a **torsional (rotary) output**, allowing the motor to rotate the wiper arm through a full sweep with minimal backlash, while the **R** variant emphasizes its **reverse-direction capability**, enabling bidirectional wiping motion for applications requiring dual-cleaning cycles. This dual-functionality makes it particularly well-suited for systems where intermittent wiping or alternating directions are necessary, such as in automotive windshield wipers for rain or snow removal, or in industrial settings where debris must be cleared from optical sensors or protective lenses.

The motor s **sealed internal components** and **corrosion-resistant materials** ensure resistance to environmental contaminants, while its **low-maintenance design** reduces downtime and extends service life. Sprague s integration of **pneumatic feedback mechanisms** allows for real-time monitoring of wiper position, enabling seamless integration with control systems for automated or programmable wiping sequences. Whether deployed in **commercial vehicles, heavy machinery, or precision instrumentation**, this motor delivers the **torque, speed, and reliability** needed to handle the most rigorous wiping tasks without compromising performance. With Sprague s reputation for innovation and engineering precision, the **ST9/38-R Air-Push Wiper Motor** stands as a dependable solution for industries where standard wiper systems simply cannot meet the demands of the job.

The **Sprague ST9/38-R Air-Push Wiper Motor (ST9/38-T 81 H3)** is a popular aftermarket replacement for various vehicle wiper systems, particularly those using the **ST9/38** or **81H3** wiper arm and blade assemblies. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Compatibility**

The ST9/38-R is designed to fit a wide range of vehicles, including many **Ford, GM, Chrysler, and European models** from the late 1990s through the 2010s. It is commonly used with **81H3 wiper arms and blades**, which are also widely available, reducing the need for custom parts.

2. **Air-Push Mechanism**

Unlike traditional wiper motors that rely solely on mechanical linkage, the **Air-Push system** uses compressed air to extend and retract the wiper arms. This design eliminates the need for a **wiper linkage rod**, which can wear out or break over time. It also reduces the risk of **arm misalignment** or **uneven wiping patterns**, as the air pressure provides consistent force.

3. **Durability and Longevity**

Sprague is a well-known brand in the automotive aftermarket, and this motor is built to last. The **sealed internal components** and robust construction help prevent dust and moisture ingress, which can shorten the lifespan of cheaper motors. Many users report **50,000 miles of reliable service** with proper maintenance.

4. **Easy Installation**

The motor is designed for straightforward installation, especially when replacing a failing original equipment (OEM) motor. Since it does not require a linkage rod, the process is often **simpler and faster** than installing a traditional wiper motor. Most installations can be completed in **under an hour** with basic tools.

5. **Quiet Operation**

Sprague motors are generally **quieter** than some OEM or generic aftermarket alternatives. The smooth operation of the Air-Push system reduces **noise and vibration**, which is a common complaint with older or worn wiper motors.

6. **Widely Available Parts**

Because the **81H3 wiper arms and blades** are so common, finding replacements is easy. This means you won t be stuck searching for hard-to-find parts if your original arms wear out.

7. **Intermittent Wiper Function**

The ST9/38-R supports **intermittent wipe settings**, which can be useful for rain sensors or driver preferences. This feature is often included in the wiring harness provided by Sprague.

8. **Good Customer Support and Warranty**

Sprague offers a **limited warranty** (typically 1 year) and has a reputation for **responsive customer service**. If issues arise, they are often willing to assist with replacements or troubleshooting.

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### **Cons**

1. **Higher Upfront Cost**

Compared to **basic generic wiper motors**, the Sprague ST9/38-R is **more expensive**. Prices typically range from **$100 to $150**, depending on the retailer and whether it includes accessories like the wiring harness or mounting hardware. This can be a deterrent for budget-conscious buyers.

2. **Air Compressor Dependency**

The Air-Push system requires **compressed air** from the vehicle s **power brake booster or air suspension system** (if equipped). If your vehicle lacks a **functional air system**, you may need to **modify or add an air compressor**, which adds complexity and cost. Some vehicles (particularly older ones) may not have a suitable air source, requiring additional work.

3. **Potential for Air Leaks**

Over time, the **air hoses or seals** in the Air-Push system can degrade, leading to **air leaks**. If this happens, the wiper arms may **fail to extend fully** or may operate erratically. Regular inspection of the air lines is recommended.

4. **Limited Customization**

Unlike traditional wiper motors, you **cannot adjust the linkage or arm angle** manually. If your wiper arms are misaligned due to frame flex or suspension changes, the Air-Push system **cannot compensate**, and you may need to **adjust the motor s mounting position** or accept slight wiping imperfections.

5. **Compatibility Issues with Some Vehicles**

While the ST9/38-R is versatile, **not all vehicles with ST9/38 arms will work perfectly** with this motor. Some users report **intermittent operation issues** or **wiring incompatibilities**, especially with **European or Asian models** that may have unique electrical requirements. Always **verify compatibility** with your specific vehicle before purchasing.

6. **Air Pressure Requirements**

The motor requires **consistent air pressure** (typically **10-15 PSI**) to function correctly. If your vehicle s air system is **weak or failing**, the wipers may **operate slowly or not at all**. This can be a hidden issue if the air system is neglected.

7. **Installation Complexity for Non-Mechanics**

While the motor itself is easy to install, **routing the air hoses** and ensuring proper electrical connections can be **tricky for first-time DIYers**. Improper installation may lead to **air leaks, electrical shorts, or motor failure**.

8. **Limited Aftermarket Support**

While Sprague is a reputable brand, **not all auto parts stores carry this specific motor**. You may need to **order online**, which can delay repairs if you re in a hurry.

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### **Conclusion**

The **Sprague ST9/38-R Air-Push Wiper Motor** is an **excellent choice** for vehicles that use **ST9/38 or 81H3 wiper arms**, particularly those that have **worn-out or failing OEM motors**. Its **Air-Push mechanism eliminates linkage issues**, improves **durability**, and reduces **noise and vibration**. The motor is **easy to install**, **widely compatible**, and backed by **good customer support**.

However, the **higher cost**, **dependency on a functional air system**, and **potential for air leaks** are drawbacks that must be considered. If your vehicle has a **reliable air system** and you re replacing a **failing traditional wiper motor**, the Sprague ST9/38-R is a **strong recommendation**. If you re on a tight budget or your vehicle lacks a suitable air source, you may want to explore **alternative wiper motor options** (such as **high-quality traditional motors** or **hybrid systems**).

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### **Final Recommendation**

**Buy the Sprague ST9/38-R Air-Push Wiper Motor if:**

- Your vehicle uses **ST9/38 or 81H3 wiper arms**.

- You want a **durable, low-maintenance solution** without mechanical linkage issues.

- You have a **functional air system** (or are willing to ensure one exists).

- You prefer **quiet, smooth operation** and **long-term reliability**.

**Consider alternatives if:**

- Your vehicle **does not have a reliable air source**.

- You re working with a **tight budget** and can find a **high-quality traditional motor** at a lower cost.

- You re uncomfortable with **air hose routing** or **electrical modifications**.

For most drivers replacing a **worn-out OEM wiper motor**, the Sprague ST9/38-R is a **solid, long-lasting investment** that will provide **years of trouble-free service**. Just ensure you **verify compatibility** with your specific vehicle and **inspect your air system** before installation.

Details:

specifications winshielwip:

  • for models: St9, H3
  • for years: 1981
  • brand: Sprague
  • mpn: St9/38-r
  • part type: Wiper Motor
  • vintage part: Yes

general winshielwip:

  • Exterior Parts Accessories > Wipers Washers > Wiper Linkages, Transmissions Motors
  • condition: For parts or not working

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returns winshielwip:

  • time: 30 Days
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seller winshielwip:

  • # reviews: 2036
  • city: Bristol, Wisconsin
  • rating: 100.0%

shipping winshielwip:

  • service: FedEx Ground Economy
  • type: Calculated
  • transit: 3-6 Days
  • cost: $0.00
  • class: Economy
  • carrier: FedEx

offer winshielwip:

  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • quantity: 1
  • best offers: True
  • started: March 1, 2026
for models: st9, h3, for years: 1981, part type: wiper motor, vintage part: yes,
category: auto parts > exterior parts accessories > wipers washers > wiper linkages, transmissions, sku: 14193747384580731,
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