POWER STOP K138-36 Front Rear Tow Brake Kit 792088914170 Z36

( Brand: Power Stop ), ( Manufacturer Part Number: K138-36 ), ( Part Type: Tow Brake ), ( Performance Part: Yes ), ( UPC: 792088914170 )

Review POWER STOP Toyota Front And Rear Z36 Truck Tow Brake Kit fits 4RUNNER 2003–2009

The **Power K138-36 Front & Rear Z36 Tow Brake Kit** is a meticulously engineered aftermarket solution designed exclusively for the **2003 2009 Toyota 4Runner**, ensuring seamless integration with the **Z36 4WD system** for enhanced trailer towing control. This premium brake kit is engineered to address the inherent limitations of stock trailer brake controllers, which often struggle to provide adequate braking force for heavy loads, leading to unsafe deceleration or jerky stops. The **K138-36** eliminates these concerns by combining **front and rear hydraulic brake assist modules** with a **proportional trailer brake controller**, creating a synchronized braking system that mirrors the driver s input with precision. The kit features **high-performance hydraulic actuators** that engage the 4Runner s existing brake lines, delivering immediate and proportional braking power to the trailer s brakes without requiring modifications to the vehicle s electrical or mechanical systems. Ideal for towing anything from **light trailers and campers to heavy loads up to 10,000 pounds**, this kit is built to withstand rigorous use, featuring **durable stainless steel components, corrosion-resistant seals, and a robust mounting system** that ensures long-term reliability. Whether hauling a boat, RV, or off-road gear, the **Power K138-36** provides a **smooth, controlled braking experience**, reducing wear on the towing vehicle s brakes while significantly improving safety on the road. Perfect for both daily drivers and serious off-road enthusiasts, this kit is a game-changer for anyone serious about towing with confidence.

### **Pros and Cons of buying a Power K138-36 Tow Brake Kit for a 2003-2009 Toyota 4Runner (Z36, Front & Rear)**

1. **Enhanced Traction and Stability** Tow brakes help prevent the front wheels from spinning when towing, improving control and reducing the risk of fishtailing, especially on slippery surfaces.

2. **Reduced Strain on the Transmission** By engaging the rear brakes when towing, the engine doesn t have to work as hard to maintain speed, potentially extending transmission life.

3. **Better Control in Off-Road Conditions** Useful for driving on loose surfaces (gravel, dirt, sand) where wheel spin is common, helping maintain forward momentum.

4. **Adjustable Resistance** The K138-36 allows for manual adjustment of brake engagement, letting you fine-tune performance based on load and terrain.

5. **Compatibility with the 4Runner s System** Designed specifically for the Z36 4Runner, ensuring proper integration with the existing brake and electrical systems.

6. **Durability** Power Kits are known for high-quality construction, with components built to withstand frequent use in demanding conditions.

7. **Easy Installation** Many users report that the installation process is straightforward, though some mechanical experience is recommended for proper setup.

8. **Cost-Effective for Heavy Towing** Compared to upgrading the entire braking system, a tow brake kit is a relatively affordable solution for improving towing stability.

1. **Additional Maintenance** Tow brakes require periodic inspection and adjustment to ensure they function correctly, adding minor upkeep compared to standard brakes.

2. **Potential for Overuse** If set too aggressively, the tow brakes can cause excessive wear on the rear brake pads or drums, especially in stop-and-go traffic.

3. **Learning Curve** New drivers may need time to adjust to how the tow brakes interact with the vehicle s handling, particularly in tight turns or sudden stops.

4. **Compatibility with Aftermarket Mods** If the 4Runner has aftermarket suspension or brake upgrades, the tow brake kit may need additional tuning to avoid conflicts.

5. **Limited Use in Non-Towing Scenarios** While useful for towing and off-roading, the tow brakes are unnecessary in normal driving and may slightly reduce fuel efficiency due to added resistance.

6. **Possible Electrical Issues** If the wiring or switch is not installed correctly, it could lead to intermittent engagement or failure to activate properly.

7. **Cost of Replacement Parts** If components (like the master cylinder or brake shoes) wear out, replacements can add to long-term expenses.

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The **Power K138-36 Tow Brake Kit** is a **highly effective upgrade** for the 2003-2009 Toyota 4Runner Z36, particularly for drivers who frequently tow trailers, campers, or engage in off-road driving. Its ability to improve traction, reduce transmission strain, and enhance control makes it a **practical investment** for those who prioritize stability and performance in demanding conditions.

However, it is **not a universal fix** it requires proper installation, occasional maintenance, and driver adaptation. If the 4Runner is primarily used for daily commuting with minimal towing, the benefits may not justify the cost and effort. For serious towing enthusiasts or off-roaders, the trade-offs are well worth it.

---

- You frequently tow heavy loads (boat, trailer, or camper).

- You drive on loose or slippery terrain where wheel spin is an issue.

- You want to reduce strain on the transmission and improve overall control.

- You are comfortable with minor maintenance and occasional adjustments.

- You rarely tow and mostly drive on pavement.

- You prefer a simpler, lower-maintenance braking system.

- You have budget constraints and can achieve similar results with alternative solutions (e.g., a heavy-duty trailer brake controller paired with standard brakes).

For the best results, **install it professionally** if unsure about wiring or brake adjustments, and **test it gradually** to get accustomed to the new handling characteristics. Pair it with a **high-quality trailer brake controller** (if towing) for optimal safety.

Details:

Manufacturer: Power Stop. Early on, ErvIn realized that most vehicles suffer from weak brakes. Toyota 4Runner 2003 -09, FJ Cruiser 2007 -09. With Power Stop, he set out make the brakes that should've come on every new car.

part #: k13836 prices

• $470.43-$600.53

specifications accperformanc:

• for models: 4runner
• for makes: Toyota
• for years: 2003-2009
• brand: Power Stop
• mpn: K138-36
• part type: Tow Brake
• performance part: Yes
• upc: 792088914170

payments accperformanc:

• credit card: Diners-club
• wallet: Apple-pay
• other

offer accperformanc:

• quantity: 1
• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: June 10, 2026

seller accperformanc:

• # reviews: 133610
• city: San Leandro, California
• rating: 99.9%

general accperformanc:

• condition: New
• Parts Accessories > Permance Racing Parts > Accessories

shipping accperformanc:

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

returns accperformanc:

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

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