Tailgate Hydraulic Strut (RH) for Tesla Model 3 (2017-2023) | 1551489-00-B

1. Core Function Description

1. Precision Lifting & Support: Uses high-pressure hydraulic oil and a nitrogen-charged cylinder to provide consistent upward force, supporting the tailgate (≈25kg weight) in any open position (from 15° to full 90°) without sagging. It eliminates the need for manual holding, ensuring convenient loading/unloading.
2. Smooth Opening/Closing: Features a multi-stage damping valve that controls the strut’s extension/retraction speed—opening at a steady 5mm/s to avoid sudden popping, and closing at a gentle 3mm/s to prevent slamming, protecting the tailgate and body from impact damage.
3. Environmental Resistance: The cylinder is made of seamless stainless steel with a PTFE (polytetrafluoroethylene) coating, and the piston rod uses chrome-plated hardened steel. Both materials resist corrosion from road salt, rain, and high humidity, ensuring performance in -40℃ to 80℃ environments.

2. Specification Parameter Table

3. Fault Judgment (Signs for Replacement)

• Tailgate Sagging: The tailgate slowly drops when opened (e.g., from full 90° to 60° within 30 seconds) – caused by nitrogen leakage or hydraulic oil loss, reducing support force.
• Stiff/Noisy Operation: Opening the tailgate requires excessive force (more than 50N), or there’s a "hissing" sound (nitrogen leakage) or "scraping" sound (worn piston rod seal) during movement.
• Visible Damage: Cylinder surface rust, piston rod scratches, or oil leakage (wet spots on the strut body) – these destroy the hydraulic seal and lead to complete failure.
• Uneven Opening: The tailgate tilts to the left when open (since the RH strut can’t match the LH strut’s force), causing misalignment with the body and difficulty closing.

4. Advantages of OEM-Grade (vs. Generic Products)

5. Installation Details

5.1 Package Contents

• 1× RH tailgate hydraulic strut (1551489-00-B)
• 2× High-strength mounting bolts (M8×16mm, with anti-loose washers – matches factory thread)
• 1× Installation guide (with step-by-step photos of bracket alignment)
• 1× Alcohol wipe (for cleaning old oil/grease from mounting points)

5.2 Required Tools

• Socket wrench (10mm, for removing old bolts)
• Torque wrench (to set bolt tightness)
• Flathead screwdriver (optional, for prying old strut from brackets)
• Gloves (to protect hands from residual hydraulic oil)

5.3 Installation Precautions

1. Safety First: Support the tailgate with a sturdy prop (e.g., a wooden rod) before removing the old strut – prevent the tailgate from dropping and causing injury.
2. Removal Order: First remove the bolt from the tailgate-side bracket (top end of the strut), then the bolt from the body-side bracket (bottom end) – avoid twisting the strut.
3. Alignment Check: Ensure the new strut’s mounting holes align with the factory brackets; do not force the strut (misalignment may bend the rod).
4. Torque Setting: Tighten the new bolts to 8±1Nm – over-tightening will damage the bracket plastic, while under-tightening causes rattling.

6. After-Sales Support

• Warranty: 2-year/40,000-kilometer warranty (whichever comes first), covering defects like oil leakage, force loss, or rod rust (excludes damage from improper installation or impact).
• Technical Assistance: Tesla-certified technicians available via email/chat to answer questions (e.g., bracket alignment, strut force testing).
• Compatibility Guarantee: 7-day return policy if the strut is incompatible with your 2017-2023 Model 3 (provided unused and in original packaging).

7. Conversion Guidance

• Pairing Note: For full tailgate performance, replace both RH (1551489-00-B) and LH (1551488-00-B) struts together – mixing old and new struts causes uneven force and premature failure.
• Bulk Inquiries: Repair shops or fleet managers can contact our team via "Contact Us" for discounted pricing on 10+ unit orders, with free shipping included.

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 established the independent brand "CheFuning". The Che Funing brand regards human resources as the foundation of the enterprise and attaches great importance to the construction of the talent team; The Che Funing brand regards product quality as the life of the enterprise, and every single product from screws to accident parts is carefully selected.

The CheFuning brand helps partners transform from traditional fuel vehicles to new energy vehicle models, expands from a single horizontal vulnerable parts operation to a new energy full vehicle parts channel enterprise, upgrades from regional chain stores to independent brands of new energy full vehicle series, standardizes the operation of independent brands in the new energy industry, and integrates resources to reduce costs and increase efficiency, occupying the commanding heights of enterprise management.