2004-2009 Nissan Quest Rear Coil Springs: Solving Sag and Trim Level Confusion
This guide covers the common failure symptoms, part number variations between S, SL, and SE trims, and how to replace the rear coil springs on your 2004-2009 Nissan Quest.
- Rear spring failure, causing sagging and noise, is a very common issue on 2004-2009 Nissan Quests, especially after 90,000 miles.
- CRITICAL: Not all trims use the same spring. Verify the correct part number for your S, SL, or SE model before purchasing to ensure correct ride height and handling.
- Always replace rear coil springs in matched pairs to maintain vehicle stability and prevent uneven ride height.
- Driving with a broken coil spring is unsafe; the broken piece can puncture the tire or cause a loss of control.
Symptoms of Failing Rear Coil Springs
Failure of the rear coil springs on a 2004-2009 Nissan Quest is a common issue, especially on vehicles with over 90,000 miles. The symptoms are often noticeable and can affect safety and ride quality. Look for one or more of the following signs.
- Vehicle Sagging: The most obvious symptom is a visibly lower rear ride height. The van may look like it's squatting or carrying a heavy load even when empty. You may also notice the vehicle leaning to one specific corner. Owners have reported gaining nearly two inches of rear height after replacing worn springs.
- Clunking or Knocking Noises: A broken or unseated spring can cause loud clunking or rattling sounds, particularly when driving over bumps or uneven roads. This noise is often caused by metal-on-metal contact from the broken spring piece or the spring hitting other suspension components.
- Harsh and Bouncy Ride: When coil springs lose their ability to support the vehicle's weight, the shock absorbers are forced to handle more of the impact. This results in an overly bouncy, jarring ride and a tendency for the suspension to "bottom out" (hit the bump stops) with a loud thud over bumps.
- Uneven Tire Wear: Failed springs alter the suspension geometry, causing misalignment. This can lead to accelerated and uneven wear on the inside or outside edges of the rear tires.
Known Issues, TSBs, and Recalls
There are no official recalls or specific Technical Service Bulletins (TSBs) from Nissan for premature failure of the rear coil springs on the 2004-2009 Quest. However, the high frequency of owner complaints in online forums suggests that rear spring sag is a widespread and expected issue as these vehicles age. The springs can weaken over time from metal fatigue or break due to corrosion, especially in regions that use road salt in the winter.
Pro Tip: While you are inspecting the rear suspension, also check the front lower control arm bushings. These are another very common failure point on the Quest that can cause creaking noises and sloppy steering.
Variant & Trim Level Differences: A Critical Warning
Not all 2004-2009 Nissan Quests use the same rear coil spring. Nissan produced different springs for different trim levels, likely to provide varied ride and handling characteristics (e.g., a stiffer spring for the sporty SE model). This is a major point of confusion and a critical detail to verify before buying a replacement.
| Part Number | Known Fitment | Notes |
|---|---|---|
| 55020-5Z001 | Base, S, SL | This appears to be the standard spring for most non-SE models from 2004-2009. |
| 55020-5Z010 | Base, S, SL, SE | This part number is listed for all trims, including the SE, for years 2004-2008. It may have a different spring rate than the -5Z001 part. |
| 55020-5Z002 | Rear | This part number is also listed for the rear, but specific trim applications are less clear. |
Warning: You must verify the correct part number for your specific vehicle's year and trim level (S, SL, or SE). Installing the wrong springs can result in an uneven ride height, poor handling, and unpredictable vehicle behavior. Check the part number on your existing spring if possible or confirm with a VIN at a dealership.
Buying a Used Coil Spring
A used OEM coil spring can be an excellent value, as they are often more durable than the cheapest aftermarket options. However, careful inspection is key.
- Always Replace in Pairs: It is essential to replace both rear springs at the same time. Replacing only one will result in uneven ride height and unbalanced handling. For best results, purchase a matched pair removed from the same donor vehicle.
- Physical Inspection: Before purchasing, carefully inspect the entire spring. Look for:
- Cracks: Pay close attention to the top and bottom coils, where breaks most often occur. A small crack can lead to a complete failure.
- Heavy Corrosion or Pitting: Surface rust is normal, but deep pitting or flaking rust weakens the metal and can cause the spring to break. Avoid springs with significant rust damage.
- Paint Markings: Factories often use colored paint dots or stripes to identify a spring's rate and specifications. If possible, try to match these markings to your original springs.
- Check for Sag: When buying used, there's a risk the springs are already fatigued. Ask the seller for the mileage of the donor vehicle. Springs from a lower-mileage Quest (under 100,000 miles) are a better bet. Avoid springs from vehicles that show signs of being overloaded or used for heavy towing.
Cost Comparison for Rear Coil Spring Replacement (Pair)
| Part Type | Estimated Cost (Parts Only) | Notes |
|---|---|---|
| New OEM | $360 - $500 | Price for two springs. Offers original ride quality and fit. |
| New Aftermarket | $100 - $200 | Brands like MOOG and Lesjofors are common. Price and quality can vary significantly. |
| Used OEM | $60 - $150 | A cost-effective option if you can find a low-mileage, rust-free pair. |
| Shop Labor | $150 - $450 | Labor to install a pair of rear springs. |
Replacement Overview & Difficulty
Replacing the rear coil springs on a 2004-2009 Quest is a moderately difficult job that a skilled DIYer can perform. The rear suspension is a separate spring and shock design, which is simpler than a full strut assembly.
- Difficulty: 3/5
- Estimated Time: 1.5 - 2.5 hours
- Tools Needed: Jack, jack stands, wheel chocks, breaker bar, torque wrench, 17mm, 19mm, and 22mm sockets/wrenches.
Simplified Steps:
- Safely raise the rear of the vehicle with a jack and support it on jack stands placed on the frame, not the axle. Chock the front wheels.
- Remove the rear wheels.
- Place a jack under the rear axle to support its weight.
- Remove the lower shock absorber bolt. This is often a 17mm nut and 19mm bolt head.
- Slowly and carefully lower the jack supporting the axle. This will decompress the coil spring. You may need to disconnect sway bar links or brake line brackets to get enough clearance.
- Once the axle is low enough, the coil spring and its rubber insulators can be removed by hand. Note the orientation of the spring and insulators.
- Install the new spring with its insulators, making sure it is seated correctly in the upper and lower pockets.
- Raise the axle with the jack to compress the spring and align the lower shock mount. Reinstall the bolt.
- Do not fully tighten the shock bolt until the vehicle's full weight is back on the suspension to prevent bushing damage.
- Reinstall the wheels, lower the vehicle, and then torque the fasteners to specification.
Torque Specs: While you should always verify with a factory service manual, common torque values for similar Nissan models are 67-88 ft-lbs for the lower shock bolt and 59-78 ft-lbs for the upper shock nut.
Frequently Asked Questions (FAQ)
Do I need an alignment after replacing rear coil springs?
Yes, it is highly recommended. Replacing the springs changes the ride height, which affects camber and toe angles. A four-wheel alignment will ensure proper handling and prevent premature tire wear.
Can I use SE springs on my S or SL model for a sportier ride?
While it might be physically possible since the mounting points are the same, it's not recommended without understanding the full implications. The SE springs are likely stiffer, which will change the ride quality and could potentially upset the vehicle's handling balance if not paired with matching shock absorbers.
What is the difference between a coil spring and a shock absorber?
The coil spring supports the vehicle's weight and absorbs large bumps. The shock absorber (or strut) controls the bouncing motion of the spring. They work together, but are separate components. A bad spring causes sag, while a bad shock causes excessive bouncing.
Can I just replace the broken spring instead of the pair?
No. Springs weaken and sag over time. If you replace only one, that side of the vehicle will sit higher than the other, creating an imbalance that is unsafe and will cause poor handling and braking. Always replace them in pairs (both rears or both fronts).
Technical Specifications
OEM Part Numbers: 55020-1JA0B 55020-3GP0A 55020-5Z001 55020-5Z002 55020-5Z010
Rear Suspension Type: Independent Multi-link Lower Shock Bolt Torque: 67-88 ft-lbs (verify with service manual) Upper Shock Nut Torque: 59-78 ft-lbs (verify with service manual)
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Nissan Quest:
- Symptoms of Failing Rear Coil Springs
- Known Issues, TSBs, and Recalls
- Variant & Trim Level Differences: A Critical Warning
- Buying a Used Coil Spring
- Cost Comparison for Rear Coil Spring Replacement (Pair)
- Replacement Overview & Difficulty
- Simplified Steps:
- Frequently Asked Questions (FAQ)
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