W10/12 Pendulum Arm, 18-24 in.

Introduction
The W10/12 Pendulum Arm, 18-24 in. for marine use is a vital component in your vessel’s wiper system, specifically designed to handle the harsh maritime environment while delivering dependable windshield clearing performance. Whether you’re navigating heavy rainfall, ocean spray, or fog, this stainless steel, adjustable-length pendulum arm ensures optimal visibility and safety. It’s engineered to fit W10 and W12 series wiper motors, offering a seamless and durable connection between the motor and the wiper blade.
For boaters, yachtsmen, and marine professionals, investing in a high-performance pendulum arm like the W10/12 ensures extended durability, better wiping coverage, and smoother movement under all sea conditions. This specific 18–24 inch variation offers versatility for various windshield sizes while providing resistance to corrosion and vibration, making it a top choice for both OEM installs and replacements.
Overview / What Is a W10/12 Pendulum Arm?
A pendulum wiper arm is a mechanical component that transfers motion from the wiper motor to the wiper blade, allowing it to oscillate across the glass surface. The W10/12 Pendulum Arm, 18-24 in. for marine use is specifically crafted for boats, yachts, and marine engines that require reliable wiper functionality during all types of weather. It’s constructed from marine-grade stainless steel to withstand corrosive saltwater exposure and is adjustable in length from 18 to 24 inches to suit different windshield dimensions.
This pendulum arm fits directly onto W10 or W12 marine wiper motors, which are common in helm station installations. It allows for a secure and smooth wiping motion across various types of curved or flat glass windshields. With a tapered spline or locking nut design (depending on the model), installation is straightforward and ensures longevity even in high-vibration environments.
Key Features of W10/12 Pendulum Arm, 18-24 in.
- Adjustable length from 18 to 24 inches
- Designed for W10 and W12 marine wiper motors
- Durable stainless steel for corrosion resistance
- Ideal for helm and performance applications
- Easy to install with locking nut or splined drive
Whether you’re retrofitting an older vessel or specifying equipment for a new build, this pendulum arm offers unmatched reliability and performance in demanding marine conditions.
How to Install a Marine Pendulum Wiper Arm
Proper installation of the pendulum arm for marine ensures longevity and effective wiper operation. Follow these steps to install your W10/12 Pendulum Arm:
- Turn off the wiper system and disconnect power to prevent accidental movement.
- Locate the output shaft of your W10 or W12 wiper motor.
- Align the arm’s splined or keyed fitting with the motor shaft, ensuring a tight match.
- Adjust the arm length between 18–24 inches based on windshield coverage needs.
- Tighten the locking nut securely and test for smooth oscillation before finalizing.
Regular inspection and ensuring correct torque can prevent loosening due to engine vibration or heavy weather use. If you’re unsure, consider professional assistance to guarantee marine-grade performance.
Marine Applications and Compatibility
The W10/12 Pendulum Arm, 18-24 in. for marine is commonly found in:
- Coastal fishing boats and sportfishing vessels
- Sailing yachts with enclosed helm stations
- Commercial vessels like patrol boats and ferries
- Luxury cruisers with panoramic windshields
Its adjustable length and high-grade construction make it a universal solution for many vessel types. It’s ideal for both single and multi-arm wiper systems and compatible with most industry-standard marine blades.
Maintenance Tips
To maintain optimal performance and increase the lifespan of your pendulum arm for marine applications, follow these maintenance recommendations:
- Clean regularly: Rinse with fresh water after saltwater exposure.
- Inspect connections: Check the bolt or spline for tightness monthly.
- Lubricate pivot points: Use marine-safe lubricant to avoid stiffness or rust.
- Check arm alignment: Misalignment can lead to poor wiping or strain on the motor.
These tips help prevent corrosion, improve performance, and ensure visibility when it matters most.
Best Pendulum Arm Options for Marine Use
Choosing the right pendulum wiper arm depends on your motor model and glass size. The W10/12 Pendulum Arm, 18-24 in. for marine remains a top pick for its flexibility, high-grade materials, and industry-standard compatibility. It fits seamlessly with W10/W12 series motors, making it an excellent replacement or OEM choice.
If you operate in salt-heavy environments or offshore conditions, the stainless-steel body offers peace of mind against pitting or corrosion. Combined with precision design and easy adjustability, it provides long-lasting value with minimal upkeep.
Troubleshooting Marine Wiper Arm Issues
Even the best marine wiper arms can encounter operational hiccups. Here’s how to resolve common issues:
- Skipping or chatter: Check for dirt buildup on blade and arm; ensure proper torque.
- Arm not moving: Inspect motor function, fuse box, and arm-to-shaft connection.
- Uneven wiping: Adjust arm length to match windshield curvature.
- Corrosion signs: Replace immediately if metal degradation affects performance.
Routine checks can detect early signs of wear, preventing costly damage or reduced visibility during critical operations.
Expert Advice and Pro Recommendations
Marine pros recommend the W10/12 Pendulum Arm, 18-24 in. for its proven reliability in rough seas and commercial settings. If you’re installing new wipers or upgrading from older arms, this model’s flexibility and durability make it a clear favorite.
Pro tip: Always measure your windshield coverage area and wiper blade reach before adjusting or replacing an arm. Overextension can lead to poor wipe angles, while undersizing can result in inadequate visibility coverage.
For a limited time, use code WELCOME5 for 5% off your order. This offer is perfect for first-time buyers looking to upgrade their vessel’s wiper performance.
Detailed FAQ Section
What boats are compatible with the W10/12 Pendulum Arm, 18-24 in.?
This pendulum arm is designed for boats equipped with W10 or W12 wiper motors, making it compatible with a wide range of vessels. These include sportfishing boats, trawlers, sailboats, commercial workboats, and luxury cruisers with enclosed or semi-enclosed helm stations. Its adjustable length feature from 18 to 24 inches makes it versatile for both small and large windshields. Whether your vessel operates on lakes, coastal waters, or offshore, this arm delivers professional-grade wiping efficiency. Always check motor compatibility before purchase.
How do I adjust the W10/12 Pendulum Arm length?
To adjust the length, first locate the securing screw or nut on the telescopic arm. Loosen it gently and slide the inner arm segment to the desired length between 18 and 24 inches. Ensure the length suits your windshield’s wipe pattern and offers full visibility coverage. Once set, tighten the screw or nut securely to prevent any slipping. It’s recommended to test the range before full operation to ensure smooth, uninterrupted wiping action.
Can I use this pendulum arm in saltwater environments?
Yes, the W10/12 Pendulum Arm is manufactured from marine-grade stainless steel, which is inherently corrosion-resistant and built to withstand long-term exposure to saltwater. Regular rinsing with freshwater after trips and applying corrosion inhibitors periodically can help maintain its finish and extend its life. It is one of the most durable options available for salt-heavy maritime environments and has been rigorously tested for reliability in harsh weather.
What’s the difference between a pendulum and pantograph wiper arm?
The main difference lies in the movement. A pendulum arm swings in a single arc from a pivot point, commonly used on smaller windshields or when limited space is available. A pantograph arm uses two arms and a connecting linkage to provide a broader, more symmetrical wiping motion—ideal for large or vertical windows. Pendulum arms are typically simpler to install, more compact, and are well-suited for most mid-size marine applications.
How often should I replace a marine pendulum arm?
Replacement depends on usage, environment, and care. In general, a high-quality marine pendulum arm like the W10/12 can last several years with proper maintenance. Signs that indicate replacement include corrosion, joint wear, poor wiping performance, or difficulty maintaining blade contact. For vessels operating year-round or in commercial settings, annual inspection is advised. Preventative replacement every 2-3 years ensures consistent performance and safety during inclement weather.
Conclusion
The W10/12 Pendulum Arm, 18-24 in. for marine is an indispensable part of your marine wiper system. With its corrosion-resistant build, adjustable length, and compatibility with W10/W12 motors, it ensures reliable visibility in all weather conditions. Whether you’re outfitting a new boat or upgrading a seasoned vessel, this pendulum arm is a smart investment in safety, performance, and longevity.
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