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Coil Spring 1K0-511-115-DF
Available in stores 8 offers
Vehicle fitment 584 vehicles
Technical specifications
| Fitting Position | Rear Axle |
|---|---|
| Spring Design | Coil Spring |
| Free Length | Approx. 366 mm |
| Outer Diameter | Approx. 120 mm |
| Wire Diameter | Approx. 12.8 mm |
| Material | High-strength steel |
| OEM Part Number | 1K0-511-115-DF |
| Brand Group | Volkswagen Group |
How to replace the Coil Spring
Replacing the rear coil spring on a Volkswagen Jetta, Golf, or Rabbit requires safe vehicle lifting, spring compression, and suspension disassembly. This job involves significant safety risks due to stored spring tension. A qualified mechanic and proper spring compressor equipment are strongly recommended. Allow 1.5–2.5 hours for a single spring replacement.
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Prepare the Vehicle
Park on a flat, level surface. Engage the parking brake and chock the front wheels. Gather all required tools: spring compressor, socket set, torque wrench, floor jack, and jack stands.
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Lift and Support the Rear
Use a floor jack to raise the rear of the vehicle and place jack stands under the designated lift points. Never work under a vehicle supported only by a floor jack.
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Remove the Rear Wheel
Loosen and remove the lug nuts, then take off the rear wheel to gain access to the suspension components.
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Compress the Coil Spring
Attach a proper spring compressor tool to the coil spring and compress it until spring tension is fully relieved from the suspension seats. Do not proceed without fully compressing the spring.
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Detach Suspension Components
Remove or loosen the shock absorber, control arm, or sway bar link as necessary to free the coil spring. Refer to the vehicle's service manual for model-specific component routing.
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Remove Old Spring and Install New
Carefully extract the compressed old spring. Position the new 1K0-511-115-DF spring in place, ensuring it is correctly seated in both upper and lower spring perches. Confirm color-code orientation if applicable.
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Reassemble and Torque Components
Slowly release the spring compressor. Reattach all suspension components. Torque lug nuts to approximately 120 Nm (88.5 ft-lbs). Torque all suspension fasteners to manufacturer specifications from the service manual.
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Lower Vehicle and Inspect
Remove jack stands and lower the vehicle to the ground. Visually inspect ride height and spring seating. Test drive at low speed and check for abnormal noise or handling before returning to normal use.
Signs of a worn part
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Uneven Ride Height
One corner of the vehicle sits visibly lower than the others, indicating a collapsed or weakened coil spring that can no longer support its rated load.
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Clunking or Knocking Noise
A broken or cracked spring can shift in its perch during suspension travel, creating audible clunking sounds over bumps or during cornering.
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Harsh or Bouncy Ride Quality
A worn spring that has lost its tension rate fails to properly absorb road impacts, resulting in a noticeably rougher or more bouncy ride than normal.
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Poor Handling and Body Roll
A fatigued rear spring reduces the suspension's ability to resist body roll in corners and maintain proper vehicle geometry, negatively affecting steering response and stability.
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Visible Corrosion or Cracking
Surface rust, visible cracks, or fractures in the spring coils discovered during inspection are immediate indicators that replacement is required, even before complete spring failure occurs.
Replacement intervals
Volkswagen does not publish a mandatory replacement mileage for coil springs. Replacement is performed on a condition-basis only. Springs showing corrosion, visible cracks, permanent set, or causing uneven ride height should be replaced immediately regardless of mileage.
Frequently asked questions
Do I need to replace both rear coil springs at the same time?
Yes, it is strongly recommended to replace coil springs in pairs. If one spring has failed or fatigued, the opposing spring is typically at a similar wear stage. Replacing only one creates uneven ride height and handling imbalance.
Will the 1K0-511-115-DF fit my Volkswagen Golf or Rabbit in addition to the Jetta?
This spring is listed as compatible with specific Volkswagen Jetta, Golf, and Rabbit models sharing the same platform. However, compatibility depends on the exact model year, trim level, and suspension configuration. Always confirm fitment using your vehicle's VIN before ordering.
What is the difference between the OEM spring and the EIBACH R23301 aftermarket option?
The EIBACH R23301 has a shorter free length (340 mm vs 366 mm) and slightly thinner wire diameter. This makes it a performance or sport-oriented option that may lower ride height. It is not a direct OEM replacement and should only be selected if a lowered or sport setup is intended.
Is it safe to replace a coil spring at home without professional help?
Coil spring replacement carries significant safety risks due to the high stored energy in a compressed spring. It is possible for experienced DIYers with a proper spring compressor tool, but professional installation is strongly recommended for those without suspension repair experience.
Do I need a wheel alignment after replacing the rear coil springs?
Yes. Rear suspension work can disturb alignment angles including toe and camber. A four-wheel alignment should be performed after coil spring replacement to prevent uneven tire wear and ensure proper handling.
How do the color codes on the coil spring affect which part I need?
Volkswagen uses color codes on coil springs to indicate the spring rate and load-bearing class, which corresponds to specific vehicle configurations such as engine weight, trim level, or optional equipment. Ordering by part number 1K0-511-115-DF should ensure the correct spring, but confirming the color code matches the original removed spring is an important installation verification step.
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