Vehicle Compatibility (For GM Gen IV V8 Engines - 3-Bolt Cam & 4X Reluctor):
(Fitment Note: Fits Gen IV V8 engines equipped with a 3-Bolt Camshaft and 4X Reluctor ONLY. Does NOT fit Gen III engines (LS1/LS6) requiring a 1X reluctor. Will not fit VVT engines unless performing a VVT delete.)
Direct Factory Replacement Applications:
2009-2015 Cadillac CTS-V (6.2L Supercharged LSA)
2012-2015 Chevrolet Camaro ZL1 (6.2L Supercharged LSA)
2009-2013 Chevrolet Corvette ZR1 (6.2L Supercharged LS9)
2006-2007 Chevrolet Corvette (6.0L LS2 - 58x engines)
2006-2007 Cadillac CTS-V (6.0L LS2 - 58x engines)
2007-2009 Chevrolet Trailblazer SS / Saab 9-7x Aero (6.0L LS2)
Cam Swap / Conversion Applications:
Fits all 2007-2015 Gen IV LS Engines (4.8L, 5.3L, 6.0L, 6.2L LS3) upgrading to an aftermarket 3-Bolt Camshaft.
Interchange/OE Part Numbers: 12586481, 12556582, 12646386, 134-1003.
What's Included in the Package List:
- 1x Heavy-Duty Timing Chain
- 1x Camshaft Sprocket (3-Bolt Design, Features 4X Reluctor Trigger Wheel)
- 1x Crankshaft Sprocket (Lower Gear)
- 1x Timing Chain Dampener / Guide
- 3x Heavy-Duty Camshaft Bolts
The Performance Standard: Heavy-Duty Gen IV 3-Bolt 4X Timing Chain Set for LS Cam Swaps
Are you planning a high-performance camshaft swap, executing an AFM/DOD or VVT delete, or simply looking to bulletproof your built Gen IV LS engine? The factory late-model Gen IV single-bolt camshaft configuration is notorious for being a failure point under high-RPM stress and aggressive valve lifts. Upgrade your rotating assembly's valvetrain reliability and secure your timing with this Premium Heavy-Duty 3-Bolt Timing Chain Set. Featuring the highly industry-proven 3-bolt camshaft sprocket paired with a 58x-crank compatible 4X sensor reluctor wheel, this kit provides a rock-solid mechanical connection that ensures your valvetrain stays perfectly synchronized under extreme racing or heavy-duty towing conditions.
This heavy-duty timing set is considered the industry benchmark for modern LS building and performance modifications. It features a high-tensile alloy steel timing chain that eliminates chain whip and elongation, along with a precision-machined crankshaft sprocket and a durable timing chain dampener/guide to keep chain tension uniform. As a massive added value for custom builders, this package includes the essential 3-bolt camshaft gear with an integrated 4X reluctor wheel and a full set of three heavy-duty high-tensile camshaft bolts. Whether you are running a factory supercharged beast or converting a truck engine into a street warrior, this kit eliminates the weak single-bolt setup to deliver permanent timing stability.
(⚠️ CRITICAL FITMENT & CONVERSION NOTE: This kit is designed strictly for GM Gen IV V8 engines equipped with a 3-Bolt Camshaft and a 58x crankshaft position system (4X Reluctor Wheel). It is a direct factory replacement for LSA, LS9, and late LS2 platforms, and the absolute standard for upgrading single-bolt LS3, L99, L76, 4.8L, 5.3L, or 6.0L engines to an aftermarket 3-bolt cam. It will NOT fit older Gen III engines (LS1/LS6) requiring a 1X reluctor wheel. Always pair this kit with a 3-bolt camshaft.)
Engineered to support your most demanding engine modifications and power goals. This heavy-duty kit serves as a premium factory replacement for the 2009-2015 Cadillac CTS-V, Chevrolet Camaro ZL1 (LSA), Corvette ZR1 (LS9), and 2006-2007 LS2 models, while seamlessly adapting to all 2007-2015 Gen IV truck and car blocks receiving aftermarket camshaft profiles. Build and modify your V8 engine the right way with BTSCAR's premium internal components and unleash your engine's true performance potential with total peace of mind.
Free standard U.S. shipping
Eligible orders ship free to physical street addresses in the contiguous 48 states and Washington, DC. Orders normally process within 1 business day; transit is estimated at 3–5 business days, for 4–6 business days total after ordering. Business days exclude weekends and U.S. public holidays. Delivery estimates are not guaranteed. Alaska, Hawaii, U.S. territories, international destinations, P.O. Boxes and APO/FPO addresses are not supported.
Fulfillment and tracking
Eligible orders are fulfilled through Amazon Multi-Channel Fulfillment (MCF). BTSCAR remains the seller and handles customer service. Tracking is emailed after dispatch.
30-day returns and exchanges
Request an eligible return within 30 days of delivery. Standard returns must be new, unused, uninstalled and complete with original packaging. BTSCAR supplies a free prepaid return label, including for eligible change-of-mind returns, and charges no restocking fee. Contact support@btscar-us.com for authorization before returning anything; use only our label and instructions.
Refunds
After an eligible return is received and inspected, the refund is issued to the original payment method within 7 days. Bank posting times may be longer.
Full policies: https://btscar-us.com/policies/shipping-policy and https://btscar-us.com/policies/refund-policy
12-month limited warranty
Eligible products purchased directly from btscar-us.com are covered for 12 months from delivery against verified defects in materials or workmanship under normal automotive use.
Installed products
Installation does not automatically void warranty coverage. Installed items are not eligible for standard returns, but covered defects may qualify for warranty service. Incorrect installation, inadequate lubrication, contamination, overheating, misuse, racing, modifications and normal wear are excluded. Labor, diagnosis, towing and consequential expenses are excluded to the extent permitted by law. Statutory consumer rights remain unaffected.
Claim support
Email support@btscar-us.com with your order number, product or SKU, vehicle details and a description with photos or video. We may request reasonable installation or diagnostic information. Approved claims may receive replacement parts, an equivalent replacement, or a refund if no suitable replacement is available. We provide a prepaid label when an approved warranty item must be returned. Wait for our instructions before shipping.
Customer service
Phone / WhatsApp: +86 158 1943 1912. Daily, 10:00 AM–10:00 PM (GMT+8). We aim to respond within 24 hours; this is a target, not a guarantee.
Full warranty: https://btscar-us.com/pages/warranty-policy
