FABTECH K9011DL Benz Coil Assist Kit 674866113978 1.5 2015-21

( Brand: Fabtech ), ( Manufacturer Part Number: K9011DL ), ( Part Type: Coil Assist ), ( Country Of Origin: Us ), ( UPC: 674866113978 )

Review FABTECH 1.5 Inch Coil Assist Kit 2015 21 Mercedes benz fits SPRINTER 3500 4WD

The **Fabtech K9011DL 1.5-Coil Assist Kit** is a meticulously engineered aftermarket solution designed to elevate the performance and functionality of the **2015 2021 Mercedes-Benz Sprinter 3500 4WD** with a **3500 diesel engine**, particularly those equipped with the **OM642 or OM654 powertrain**. This high-quality kit is specifically crafted to address the limitations of stock coil packs, which can degrade over time due to wear, electrical resistance, or exposure to harsh environmental conditions, leading to misfires, reduced fuel efficiency, and diminished engine responsiveness. The **1.5-coil assist configuration** ensures optimal ignition timing by providing a robust, high-energy spark across all cylinders, even under demanding conditions such as towing heavy loads, operating at high altitudes, or driving in extreme temperatures. Constructed from **durable, corrosion-resistant materials**, the K9011DL features **pre-wired, plug-and-play connectors** that simplify installation, allowing even DIY enthusiasts to upgrade their Sprinter s ignition system with confidence. This kit includes **high-performance coil packs** that deliver superior spark consistency, reducing the risk of engine stalling or hesitation, while also supporting emissions compliance by ensuring precise combustion. Whether you re a fleet operator, a commercial driver, or a Sprinter enthusiast seeking to maximize reliability and power, the **Fabtech K9011DL** is an indispensable upgrade that bridges the gap between stock limitations and peak engine performance. Its compatibility with the **4WD drivetrain** ensures seamless integration, making it an ideal choice for those who demand both durability and efficiency in their Mercedes-Benz Sprinter.

### **Pros and Cons of buying a Fabtech K9011DL 1.5 Coil Assist Kit for a 2015 2021 Mercedes-Benz Sprinter 3500 4WD**

1. **Improved Towing and Payload Capacity** The coil assist kit enhances the suspension by lowering the rear springs, reducing body roll and improving weight distribution. This can lead to better towing stability and increased payload capacity, which is critical for a Sprinter used for work or heavy-duty applications.

2. **Better Ride Comfort and Handling** The kit helps maintain a more level ride, reducing the "squat" effect when towing or carrying heavy loads. This can make the vehicle feel more stable and responsive, especially on rough roads or when making sharp turns.

3. **Compatibility with Aftermarket Lifts and Larger Tires** If you plan to add a lift kit or upgrade to larger tires, the coil assist kit provides a foundation for a smoother transition. Without it, a lift can cause excessive body roll or an unstable ride.

4. **Durability and Quality** Fabtech is a well-known brand in the off-road and commercial vehicle aftermarket, and their coil assist kits are designed to handle heavy-duty use. The components are typically made from high-quality materials to ensure longevity.

5. **Ease of Installation** While installation requires some mechanical skill, Fabtech provides detailed instructions, and many dealerships or specialty shops can install it for you. The kit is designed to be a straightforward upgrade for the Sprinter s suspension system.

6. **Compatibility with Other Modifications** The kit works well with other common Sprinter upgrades, such as exhaust systems, lift kits, or performance brakes, making it a versatile choice for customization.

7. **Cost-Effective Upgrade** Compared to full suspension replacements or more complex lift kits, the coil assist kit is relatively affordable and offers significant improvements in handling and stability without requiring major modifications.

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1. **Limited Effect on Front Suspension** The coil assist kit primarily targets the rear suspension. If you experience excessive body roll or poor handling in the front, you may need additional modifications, such as a front sway bar or coil springs, to achieve a fully balanced ride.

2. **Potential for Overloading the Rear Axle** While the kit improves weight distribution, it does not increase the Sprinter s towing or payload limits. If you exceed the vehicle s rated capacity, you may still risk axle or drivetrain damage, even with the coil assist installed.

3. **Installation Complexity** While not overly difficult, installing the kit requires removing the rear springs, adjusting the shocks, and ensuring proper alignment. If you lack mechanical experience, hiring a professional is advisable to avoid mistakes that could compromise safety or performance.

4. **Compatibility with Stock Suspension** If you plan to keep the stock shocks or have a heavily modified suspension (e.g., with a lift kit already installed), the coil assist kit may not provide the expected benefits or could even cause issues if not properly matched with other components.

5. **Potential for Increased Wear on Other Components** Lowering the rear suspension can alter the vehicle s geometry, potentially increasing stress on the driveshaft, differential, or steering components if not properly aligned or if other parts (like the sway bar) are not adjusted accordingly.

6. **Limited Availability of Parts** While Fabtech is reliable, finding replacement parts or support for older Sprinter models (especially those outside the U.S.) can sometimes be challenging compared to more mainstream brands.

7. **May Not Be Necessary for Light-Duty Use** If your Sprinter is primarily used for light towing or passenger transport without heavy loads, the benefits of the coil assist kit may not be as noticeable. In such cases, the cost may not justify the upgrade.

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### **Conclusion and Recommendation**

The **Fabtech K9011DL 1.5 Coil Assist Kit** is a solid choice for owners of a **2015 2021 Mercedes-Benz Sprinter 3500 4WD** who frequently tow heavy loads, carry significant payloads, or plan to install a lift kit or larger tires. The kit addresses common issues like body roll, rear squat, and uneven weight distribution, making the vehicle more stable and comfortable under load.

- **Buy it if:** You tow frequently, carry heavy loads, or plan to modify your Sprinter with a lift or larger wheels. The kit will significantly improve handling and ride quality, making it a worthwhile investment for work or off-road use.

- **Skip it if:** Your Sprinter is used primarily for light-duty tasks (e.g., daily commuting or occasional light towing). In such cases, the benefits may not outweigh the cost, and the kit could be unnecessary.

- **Consider pairing it with:** A front sway bar or coil springs if you want a fully balanced suspension, or a lift kit if you plan to increase ground clearance. Ensure all modifications are installed by a professional to avoid alignment or drivetrain issues.

**Final Verdict:** For the right user particularly those who rely on their Sprinter for heavy-duty work the Fabtech K9011DL is a practical and effective upgrade. However, weigh the cost against your specific needs before purchasing. If you re unsure, consult with a Sprinter specialist or suspension expert to confirm compatibility with your vehicle s current setup.

Details:

No interior removal required for installation. Retains factory travel and alignment. By mounting to the sub frame this helps isolate road noise and eliminates potential stress anybody. To further enhance suspension performance, Fabtech developed an auxiliary front shock kit that adds two Dirt Logic 2.25 shocks with Sprinter-specific valving.

Features: The high-quality cold-wound coil springs for longevity and ride quality. The valving will provide a superior ride quality for both loaded and unloaded vans. The Dirt Logic 2.25 shocks feature stainless steel bodies for maximum corrosion resistance in all environments. They are positioned to the correct ride height and create a secure mounting for springs.

The coil springs utilize billet aluminum upper and lower coils seats that slide over the strut. This added ride height increases ground clearance and allows for fitment of larger tires off-road use, while also helping to reduce body sway on vans with full interior build-outs or heavy cargo loads. Components: Aux Frat Shock Kit. No Driveshaft Mod.

This custom valving delivers excellent ride quality whether the van is fully loaded or unloaded. There is no attachment to the anybody structure. Brackets attach to sub frame for a quiet ride. No Welding required.

Cutting required. The heavy-duty auxiliary shock mounts are constructed from 1/4 thick steel and attach directly to the suspension sub frame, eliminating any attachment anybody. The stock struts leave a lot to be desired on their own once you unfit the van for overland use or haul cargo. Fabtech coil springs utilize billet aluminum upper and lower seats that slide over the strut bodies, ensuring proper spring positioning a secure mounting point at correct ride height .

This type of mounting is vastly superior to other shock kits that mount the anybody. Increases ride height for more ground clearance and helps reduce body sway. The coil springs are positioned around the strut bodies. $4,313.92 designed for 2015 2021 Mercedes Sprinter 3500 4WD vans, the factory front suspension relies on a McPherson strut damping, which can quickly become overwhelmed once van is unfitted over landing or used to haul heavy cargo.

Billet aluminum upper and lower coils seats properly locate the coil springs. This sub frame-mounted design helps isolate road noise and prevents unnecessary stress to the vehicles body structure. This creates increased ground clearance and of larger tires for off-road use.

part #: k9011dl prices

• $450.04-$629.10

specifications accperformanc:

• for models: 3500, 4wd, Sprinter
• for makes: Mercedes
• brand: Fabtech
• mpn: K9011dl
• part type: Coil Assist
• country of origin: Us
• upc: 674866113978

general accperformanc:

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

offer accperformanc:

• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: February 25, 2026

returns accperformanc:

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

shipping accperformanc:

• service: Standard
• cost: $0.00
• class: Standard
• transit: 3-8 Days
• type: Fixed

payments accperformanc:

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

seller accperformanc:

• # reviews: 25131
• rating: 98.5%
• city: Nashville, Tennessee

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