



Tesla Model 3/Y Suspension Arm | LH 1420428-00-B / RH 1420426-00-B
Check the selected Tesla model, model year, and option before checkout. If this product has a Car Model or Compatible Model selector, choose the option that matches your vehicle.
- Use the product images and variant name to confirm the correct version.
- If you are unsure about fitment, contact Tesstudio with your Tesla model and production year before ordering.
Tesstudio installation support is available for Tesla owners who need help choosing, installing, or troubleshooting accessories.
Most Tesstudio accessories are designed for straightforward DIY installation. For powered upgrades, wiring, lighting, or large exterior parts, professional installation may be recommended.
Local installation and technical support
- Address: 14761 Franklin Ave # G, Tustin, CA 92780
- Technical support: +1 (657) 543-9876 or +1 (657) 565-1007
- Support hours: Monday-Friday, 8:30 AM-5:30 PM
The phone numbers above are for technical installation support only. For orders, shipping, returns, or general customer service, contact:
- Email: support@tesstudio.com
- WhatsApp: +1 714 317 9647
Tesstudio checks fit, material, and daily-use durability before listing products for Tesla owners.
- Eligible products include warranty support for non-human damage issues.
- If a product arrives damaged or does not fit as expected, keep the packaging and contact us with photos so we can help quickly.
In-stock items are usually processed within 1-2 business days. Delivery time depends on destination, product size, and stock status.
- Orders over $99 qualify for free standard shipping where available.
- Oversized, remote-area, pre-order, and special-market items follow the terms shown on the product page.
- Tracking is provided after dispatch.
Need help before or after purchase?
Contact Tesstudio support:
WhatsApp
+1 714 317 9647
حدِّد الخيارات




Side-specific suspension control arm
Buy by the stamped reference, not by the picture alone
This listing separates two mirrored suspension arms: LH 1420428-00-B and RH 1420426-00-B. Their shape is similar, but the side marking, mounting orientation and part number determine which one belongs in the diagnosed position.
Before checkout: The main image shows both LH and RH arms for comparison. The selector lists one side at a time; a two-arm set is not stated as included.
Three checks that reduce ordering risk
Read the L or R marking
Product images show clear side markings. Match them to the removed component and the technician-confirmed position.
Read the entire number
1420428-00-B and 1420426-00-B are different references. A close visual match is not enough.
Confirm the failed component
Suspension noises and steering changes can come from multiple parts. Replace this arm only after inspection identifies it.
Choose the exact live side above
Both current options are available. Use the selector after the part number and side have been confirmed.
LH 1420428-00-B
Choose the left-hand option only when the removed arm or current vehicle-specific service data confirms 1420428-00-B.
RH 1420426-00-B
Choose the right-hand option only when the removed arm or current vehicle-specific service data confirms 1420426-00-B.
Why this page stays focused on matching
The correct mirrored geometry
Side selection keeps the joint, bushing and mounting direction aligned with the intended position.
A clearer handoff to the installer
A confirmed reference reduces last-minute uncertainty after the vehicle is raised or disassembled.
No unsupported position claim
The page identifies this as a suspension control arm and relies on the exact reference rather than guessing a location from appearance.
Product and fitment details
A precise install starts before the wrench turns
Document the old part
Photograph the installed orientation and reference number before removal so the new arm can be compared correctly.
Check geometry on the bench
Compare side marking, curvature, joint direction, bushing and mounting surfaces before any fastener is tightened.
Use the applicable procedure
This page does not provide torque or alignment instructions. A qualified technician should use current vehicle-specific service data.
Part and origin transparency
The current photos show CTP branding and L/R markings on the photographed arms. They do not show Tesla-branded retail packaging or a manufacturer certificate, so the reference numbers support identification but do not prove genuine Tesla manufacture.
Other Model 3/Y suspension parts to identify separately
Each listing below has different geometry and references. They should be treated as separate repair parts.
1420428 / 1420426 suspension arm FAQ
Which part number is left and right?
The live options are LH 1420428-00-B and RH 1420426-00-B.
Are the two arms interchangeable?
No. Their mirrored geometry and side references are different.
Does the main photo mean I receive both?
No pair is stated. The image shows both sides for comparison, while the selector sells one side at a time.
Does this page guarantee fit by model name alone?
No. Confirm the vehicle configuration, exact part number and diagnosed suspension position before ordering.
Is CTP branding the same as Tesla-branded packaging?
No. The photos show CTP markings and do not show Tesla-branded retail packaging or a manufacturer certificate.
What should be checked after installation?
A qualified technician should inspect the completed work and determine any alignment or steering checks required by the applicable repair procedure.
Confirm the component, side and full reference before checkout
A precise match and a professional repair plan protect both the installation and the decision behind it.
Q&A
We provide assistance through email, live chat, and detailed installation guides. Additionally, we offer step-by-step tutorial videos featuring influencers to help you with the process.
We offer a one-year warranty (two years for some products).
Yes, the product can be removed after installation without affecting the original wiring harness of the vehicle.
We offer free returns and exchanges if there are any quality issues with the product upon receipt by the customer.
