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Guangzhou Fuheng Auto Parts Supply Chain Co., Ltd.
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Rear Coil Spring Dumper Lower Isolator Pad Cover for 2017-2023 Tesla Model 3/Model Y | 1044479-00-E
1. Core Function Description
As a key component in the rear suspension system of 2017-2023 Tesla Model 3/Model Y, this premium brand-grade rear coil spring dumper lower isolator pad cover is engineered to match original factory specifications, with core functions focusing on "vibration buffering + spring-base protection + noise dampening":
Suspension Vibration Buffering: Positioned between the lower end of the rear coil spring and the suspension base, it’s made of high-elasticity rubber that absorbs 80% of vertical and lateral vibrations (15-250Hz) generated by the spring during driving over rough roads, potholes, or uneven surfaces. This reduces vibration transmission to the suspension structure and cabin, enhancing ride stability.
Spring & Base Protection: It acts as a protective barrier between the metal coil spring and the suspension base, preventing direct metal-to-metal contact that causes wear, scratches, or deformation. It also limits excessive spring movement during sudden braking or acceleration, extending the service life of both the spring and the base.
Noise Reduction: Its dense rubber structure dampens high-frequency "squeaking" or "thudding" noises caused by spring movement against the base. This eliminates annoying suspension noise, especially noticeable when driving over speed bumps or gravel roads.
2. Specification Parameter Table
Parameter Category
Detailed Description
Compatible Vehicles
Tesla Model 3 (2017-2023, all configurations); Tesla Model Y (2017-2023, all configurations)
Installation Position
Rear suspension system (lower end of the rear coil spring, between the spring and suspension base)
-40℃ to 100℃ (resists hardening in low temperatures and softening under high loads)
Environmental Resistance
Oil-resistant; UV-resistant; resistant to road salt and moisture (no degradation in harsh environments)
Related Part Note
Distinct from upper isolator pad cover (e.g., 1188471-00-C) – designed for lower spring mounting point
3. Fault Judgment (Signs for Replacement)
Replace this lower isolator pad cover immediately if you observe the following symptoms, indicating wear or failure:
Rear Suspension Noise: A "grinding" or "metallic rubbing" sound from the rear suspension when driving over bumps or during turns—caused by worn, cracked, or missing pad covers that leave the spring in direct contact with the base.
Visible Damage: The pad cover is cracked, torn, flattened (unable to rebound), or completely detached; rubber material is brittle or has oil/chemical damage—losing vibration buffering and protective functions.
Uneven Spring Wear: The lower end of the rear coil spring shows uneven wear marks or bending, indicating the pad cover is no longer properly aligning or cushioning the spring.
Reduced Suspension Stability: Noticeable "looseness" in the rear suspension during braking or acceleration, or increased body roll during turns—due to degraded pad cover that fails to restrict spring movement.
4. Advantages of Premium Brand-Grade (vs. Generic Products)
Advantage Dimension
This Premium Brand-Grade Pad Cover
Generic Products
Material Quality
High-density EPDM rubber with fabric reinforcement; service life ≥6 years.
Low-grade synthetic rubber (no reinforcement); service life 1-2 years, prone to cracking or crumbling.
Fit Precision
Matches factory lower spring and base dimensions (tolerance ≤0.5mm); direct installation without modification.
Poor dimensional accuracy (tolerance ≥3mm); requires trimming or forcing to fit, leading to premature failure.
Load-Bearing Capacity
Designed to handle continuous spring loads (≥200N/cm²); no deformation under heavy use.
Fails under high loads (≤100N/cm²); compresses permanently after 3-6 months of use.
Environmental Resistance
Withstands oil, salt, and extreme temperatures; stable performance over time.
Degrades quickly in oil or salt; hardens in cold weather, losing vibration absorption ability.
5. Installation Details
5.1 Package Contents
1× Rear coil spring dumper lower isolator pad cover (1044479-00-E)
1× Installation guide (with diagrams of lower spring mounting point alignment)
1× Silicone grease packet (for easing installation and reducing friction)
5.2 Installation Tools Required
Hydraulic jack + jack stands (to lift the rear vehicle and relieve spring tension)
Socket set (17mm) for removing suspension base bolts
Pliers (to remove old pad cover fragments)
Wire brush (to clean spring base mounting surface)
5.3 Installation Precautions
Safety First: Lift the rear vehicle with a hydraulic jack and secure with jack stands—never work under a vehicle supported only by a jack. Relieve spring tension by gently lowering the suspension onto the stands.
Disassembly Step: Loosen suspension base bolts slightly to remove the old pad cover (do not fully remove bolts to avoid spring misalignment).
Clean Mounting Surface: Use a wire brush to clean rust, debris, or oil from the spring base—ensure a smooth surface for the new pad cover.
Proper Alignment: Fit the new pad cover onto the lower spring end, then align with the base mounting point. Tighten base bolts to factory torque specifications (refer to guide).
6. After-Sales Support
Warranty Service: Provides a 3-year/50,000-kilometer warranty (whichever comes first). During the warranty period, a free replacement is offered for defects like cracking, tearing, or premature hardening (non-human damage).
Technical Assistance: Dedicated EV technicians available via chat or email to assist with installation (e.g., spring tension relief, bolt torque) and post-installation troubleshooting.
Compatibility Guarantee: 7-day no-reason return if incompatible with your 2017-2023 Model 3/Model Y (product must be unused and in original packaging).
7. Conversion Guidance
For confirmation of compatibility with your specific Tesla model (e.g., 2021 Model 3 Long Range) or to inquire about details, click "Contact Us" or message via the chat box—our team will respond promptly. Bulk purchase options (for repair shops/fleet maintenance) include negotiable terms to meet your needs.
Company Profile
Guangzhou Fuheng Auto Parts Supply Chain Co., Ltd., located in the Guangzhou auto parts business district, adheres to the business philosophy of "quality first, pragmatic innovation, service-oriented, and co creation and win-win", and has estab... Company Profile
Guangzhou Fuheng Auto Parts Supply Chain Co., Ltd., located in the Guangzhou auto parts business district, adheres to the business philosophy of "quality first, pragmatic innovation, service-oriented, and co creation and win-win", and has estab...
