1997-2016 Chevy Silverado GMC Sierra 4.8L 5.3L 6.0L V8 Timing Chain Kit with Oil Pump 12557840

This High Volume Oil Pump and Timing Chain Kit is designed for compatible GM LS-series V8 engines. It helps restore proper oil circulation, maintain stable oil pressure, and ensure accurate engine timing operation by replacing worn or damaged oil pump and timing components.

Featuring a high volume and high pressure oil pump design, this kit provides reliable lubrication performance for 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L V8 engines. Manufactured with durable materials and precision-engineered components, it offers a complete replacement solution for engine oil pump and timing system service.

This high-volume, high-pressure oil pump and timing chain kit is designed for select GM vehicles with LS-series V8 engines. It includes the oil pump, timing chain, camshaft gear, crankshaft sprocket, and timing cover gasket set for engine timing and oiling system service.

Product Features

• High-volume, high-pressure oil pump design.
• Compatible with 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L oil pump applications.
• Fits select LS1, LS2, LS3, LQ4, LM7, L96, and LR4 engines.
• Includes timing components and a timing cover gasket set.

OE / Reference Numbers

12557840, 12696357, 12586665, TCS45993

Engine Codes

LS1, LS2, LS3, LQ4, LM7, L96, LR4

Package Includes

• 1 × High-Volume Oil Pump
• 1 × 60-Link Timing Chain
• 1 × 3-Bolt Camshaft Gear, 44 Teeth
• 1 × Crankshaft Sprocket, 22 Teeth
• 1 × Timing Cover Gasket Set

Important Notes

• Please verify the vehicle model, year, engine, and reference numbers before ordering.
• Confirm compatibility with the original oil pump and timing components before installation.

Warranty

AUCERAMIC 6-Month Warranty

AUCERAMIC provides a 6-month warranty for this product. Every product is checked before shipment. If you experience any product quality or installation-related issues during the warranty period, please contact our customer service team for assistance.

⚠️IMPORTANT WARNING

This timing chain kit is a high-precision engine component. It MUST be installed by a certified professional automotive technician. Incorrect timing alignment, improper installation, or failure to follow OEM service procedure will result in catastrophic engine damage. Our warranty covers only defects of the kit parts themselves. Consequential engine damage, repair labor charges, secondary damages caused by improper installation are NOT covered. Verify vehicle fitment carefully before purchase.

⏱ Estimated Delivery Time

Delivery times vary by location:

• USA: 3-7 business days
  
• Canada & Europe: 7-18 business days
  
• Australia & New Zealand: 10-20 business days
  
• Other regions: 15-45 business days
  

Delivery times may vary due to carrier delays, customs clearance, or local delivery conditions.

🚚 Shipping Information

Processing Time:

Orders are usually processed within 1-2 business days after payment confirmation.

Shipping Method:

• USA orders: For eligible US orders, products are fulfilled from our US warehouse network and shipped via USPS, UPS, or FedEx.
  
• International orders: Shipped via reliable international carriers
  

Tracking:

A tracking number will be emailed after shipment. You can track your order through carriers such as USPS, UPS, FedEx, DHL, or 17TRACK.

📦 Order Issues

If your package arrives damaged, incorrect, missing items, or significantly delayed:

Please contact us with:

• Order number
  
• Photos/videos of the package and product
  
• Description of the issue
  

Our team will review and provide a solution as quickly as possible.

🔄 Returns & Warranty

We accept returns within 30 days after delivery.

To be eligible for a return:

• Item must be unused, uninstalled, and in original condition
  
• Must include original packaging and all accessories
  

⚠️ Installed, used, or tested parts are not eligible for return unless there is a confirmed manufacturing defect.

For return requests, please contact us first with your order number, product details, and photos (if applicable).

📧 info@auceramic.com

Warranty Coverage:

✔ Manufacturing defects

✔ Shipping damage

Not covered:

✘ Improper installation

✘ Misuse or modification

✘ Incorrect vehicle application

💬 Fitment Support

Not sure if this part fits your vehicle?

Send us your year, make, model, engine size, and VIN (if available). Our team will help confirm compatibility before purchase.

📧 info@auceramic.com