Rear Motor Bushing for 2017–2023 Tesla Model 3 / 2020–2023 Model Y | 1109296-00-B / 1109297-00-C / 1109295-00-B (CFN Brand)

1. Vibration & Noise Suppression: Made of high-elasticity rubber composite, it absorbs low-frequency vibrations generated by the rear motor during operation (e.g., high-speed cruising, torque adjustments) and blocks mechanical noise from the drivetrain from transferring to the cabin—maintaining the Model 3/Y’s quiet and smooth ride quality.
2. Drivetrain Positioning: Fixes the rear motor/transmission assembly in the factory-calibrated position, preventing abnormal displacement caused by road bumps, sudden acceleration, or deceleration. This avoids misalignment between the rear motor and driveshaft (or half-shafts), which could lead to increased transmission wear, power loss, or even abnormal tire wear.
3. Impact Buffering: Acts as a “cushion” between the rigid rear motor and rear subframe; during sudden torque changes (e.g., start-stop, emergency braking), it softens the impact force between the drivetrain and chassis, reducing mechanical stress on both the motor and subframe and extending their service life.

• Rubber Matrix: Uses OEM-grade ethylene-propylene-diene monomer (EPDM) rubber, which has excellent elasticity (compression set ≤15% after 72 hours at 100°C) and anti-aging performance—avoiding cracking, hardening, or degluing even after long-term exposure to rear motor heat, rain, or road dust.
• Metal Reinforcement Sleeve: The inner sleeve (for bolt installation) is made of galvanized carbon steel (tensile strength ≥350MPa) with a corrosion-resistant coating; it ensures the bushing maintains structural stability under torque loads, preventing deformation or separation from the motor/subframe mounting points.
• Extreme Environment Adaptability: Withstands extreme temperature fluctuations from -40°C to 120°C—remaining flexible in cold winters (no brittle cracking) and stable in high-temperature environments (no softening or oil leakage); it also resists chemical corrosion from road salt (in winter de-icing scenarios), engine oil, and coolant.

1. Lift the vehicle’s rear end and secure it with jack stands (ensure stable support to avoid safety risks); remove the rear underbody splash guard to expose the rear motor and rear subframe.
2. Locate the old rear motor bushing: it is mounted on the rear side of the rear motor, secured by a single 17mm bolt that passes through the bushing’s inner metal sleeve and fastens to the rear subframe. Use a 17mm socket to loosen and remove the bolt (if the bolt is seized, apply a small amount of penetrating oil and wait 5–10 minutes to avoid thread damage).
3. Use a pry bar to gently separate the old bushing from the rear motor’s mounting bracket—if the bushing is stuck, tap the edge lightly with a rubber mallet (avoid hitting the motor or subframe directly) to loosen it, then fully remove the old bushing.
4. Clean the rear motor’s mounting bracket and the rear subframe’s bolt hole with a wire brush—wipe away rust, debris, or residual old lubricant to ensure a tight fit for the new bushing.
5. Align the CFN rear motor bushing (any of the three part numbers is interchangeable) with the rear motor’s mounting bracket, insert the original or OEM-spec bolt through the bushing’s inner sleeve, and hand-tighten the bolt into the rear subframe’s threaded hole (avoid cross-threading).
6. Use a torque wrench to tighten the bolt to Tesla’s official specification (45±3 Nm)—over-tightening will excessively compress the rubber matrix, reducing vibration damping performance; under-tightening may cause loose connections and abnormal noise during driving.
7. Reinstall the rear underbody splash guard, lower the vehicle, and perform a road test: check for abnormal noises (e.g., “clunking” or “rattling” during acceleration/braking) and confirm smooth power delivery—if NVH issues persist, recheck the bolt torque or inspect if adjacent drivetrain components (e.g., half-shaft joints) need maintenance.

Note: Although the bushing is left/right universal, if both rear motor mounting points (left/right relative to the motor) require replacement, it is recommended to use two bushings (any combination of the three part numbers) to ensure consistent damping performance and drivetrain stability. All three part numbers meet Tesla’s OEM standards and are fully interchangeable.