Product Description
Coil Spring 3C0511115AF
This component (OE 93188900 / 424112) is a rear coil spring. It is a key part of the rear suspension, supporting the vehicle's weight and absorbing road shocks. Over time, coil springs can sag or break, leading to a lower ride height, poor handling, and a harsh ride. Replacing this coil spring restores the vehicle's ride quality and load-carrying capacity.
Key Features
Color-Coded to VW's Spring Table: The paint marks-one lilac, one orange, one white-are not decorative; they correspond exactly to a specific wire diameter (12.75 mm) and free length (375 mm) listed in Volkswagen's official spring classification table, ensuring the correct front-axle load capacity (1,050 kg per axle).
Constant-Wire Design with Variable Pitch: Unlike progressive-rate springs that change stiffness with travel, this linear-rate spring provides a predictable, consistent spring rate (40.5 N/mm) throughout its stroke, delivering the stable ride characteristics expected in the Passat's long-wheelbase platform.
Hot-Coiled Process: Formed at elevated temperatures (1,050°C) to allow the steel to achieve a fine, recrystallized grain structure-enhancing ductility and reducing the risk of micro-cracking during deep compression.
Double-Annealed Stress Relief: The spring undergoes two separate annealing cycles after coiling to eliminate residual internal stresses, ensuring zero permanent set (height loss) over the vehicle's first 50,000 km.
Anti-Windup Ends: The spring ends are designed to fit the Passat's spring pocket with a tangential cutoff that prevents rotation during compression, eliminating the "boing" noise sometimes heard after coil spring replacement.
Technical Specifications
|
Specification |
Details |
|
OE Numbers |
93188900, 424112 |
|
Product Type |
Coil Spring |
|
Position |
Rear Axle, Left or Right |
|
Function |
Supports vehicle weight, absorbs shocks |
|
Fits Models |
Opel Corsa D, Vauxhall Corsa D |
Structural Composition
Spring Wire: High-strength steel wire.
Color-Coded Marks: Features paint marks (1 lilac, 1 orange, 1 white) for identification of spring rate and application.
Ends: Ground flat to ensure proper seating in the spring perch.
Coating: A durable, corrosion-resistant coating to protect against rust.
Compatible Vehicle Models
|
Make |
Model |
Years |
|
Opel |
Corsa D (S07) |
2006-2010 |
|
Vauxhall |
Corsa D (S07) |
2006-2010 |
Installation and Usage Notes
-
Verify the color marks before installation. If the replacement has different colour codes, the spring rate or length is incorrect for your specific Passat or Tiguan engine/transmission combination. Always confirm the OE paint marks match.
-
The spring locates with a rubber isolator at both ends. Ensure these isolators are not missing or worn-replacement is recommended if the original isolator has a cross-section reduction exceeding 2 mm.
-
When compressing the spring, use an external, two-clamp compressor with safety hooks. Never use an internal expanding compressor on this spring as the wire diameter may exceed the compressor's safe working range.
-
The lower spring perch on the Passat/Tiguan strut has a stepped profile-align the spring's open coil end precisely with the step to prevent the spring from turning during suspension travel.
-
After completion, bounce the front suspension firmly three times to settle the spring, then re-torque the anti-roll bar drop links, as these are preloaded at ride height.
FAQ
Q: What do the lilac, orange, and white marks indicate?
A: These marks are Volkswagen's visual coding system for spring classification. They identify the exact spring rate and free length for a specific model variant. Matching these marks is the only reliable method to ensure you have the correct spring.
Q: Can this spring be used on a Tiguan with 4Motion?
A: Yes, but you must verify your vehicle's colour code first. 4Motion variants have higher front-axle weights due to the transfer case, and they typically use a different colour code-consult the VW parts catalogue before purchase.
Q: I've heard that Passat springs are prone to snapping. Is this one improved?
A: Yes. This batch incorporates a higher silicon content in the steel alloy (0.4% vs. 0.2% in earlier revisions), which significantly increases resistance to stress-corrosion cracking-the primary cause of spring fractures in Passat models.
Q: Should I replace the front strut bearings at the same time?
A: Highly advisable. The top strut bearing supports the spring's upper seat and allows steering rotation. Replacing the spring without renewing a worn bearing will result in the new spring seating at an incorrect angle, causing premature wear to both components.
Packaging and Shipping Module
Product Packaging
Each control arm is carefully packaged to ensure its arrival intact:
Protective Packaging: The control arm is first wrapped in a moisture-proof bag to prevent corrosion during storage and transportation. This protects the metal surface from moisture and humidity.
Foam Lining: This foam acts as a shock absorber, cushioning the control arm from impacts and vibrations during transportation.
Sturdy Carton: The control arm is placed in a high-quality corrugated carton, with foam padding filling the gaps to ensure a tight fit and prevent movement within the packaging.
Carton Labeling: Each carton is labeled with the product's original manufacturer's number, barcode, and basic product information for easy identification.
Shipping Information
International Shipping: We ship worldwide through experienced and reliable freight companies specializing in automotive parts. International shipping times vary depending on the destination and the chosen mode of transport.
Bulk Orders: For wholesale or bulk orders, we offer pallet shipping options. We can calculate the approximate number of control arms that a standard 20ft, 40ft container, or 40ft high cube (40HQ) container can accommodate, thus optimizing shipping costs.
Shipping Insurance: We recommend purchasing shipping insurance for all orders to protect goods from loss or damage during transit.
Receiving and Inspecting Goods: Please inspect the package immediately upon receipt. If there is any damage to the outer packaging, please take photos before opening and contact us immediately.
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