labwork Engine Oil Pan - Direct-Fit Steel Replacement for Chevy/GMC 4.8L-6.0L (12579273)

labwork Engine Oil Pan replacement (part 12579273 / 12565683) is a direct-fit steel oil pan engineered to replace worn or leaking pans on compatible Chevy and GMC 4.8L, 5.3L and 6.0L engines.

This labwork oil pan is built as a long-lasting replacement for several GM trucks and SUVs, including Avalanche, Silverado, Tahoe, Yukon, Escalade, Express and Savana models from the late 1990s through the mid-2000s. Made from selected high-strength steel and finished to resist heat and age-related degradation, it collects and stores crankcase oil while helping prevent leaks and contamination. Before ordering, confirm fitment with your vehicle’s model year and engine size to ensure compatibility.

Which vehicles and part numbers does this pan fit?

This pan is designed to replace original equipment on many GM models. It fits 4.8L, 5.3L and 6.0L V8 engines across a range of trucks and vans; check listed part numbers against your OEM reference for a match.

• Compatible models include: Chevy Avalanche, Silverado 1500/2500/3500, Tahoe, Escalade, and GMC Sierra, Yukon, Savana, Express.
• Covered model years commonly include late 1990s through 2006 (verify year and engine).
• Cross-reference part numbers: 12579273, 12560393, 12565683, 12573695, 12577395.

How does the labwork pan resist deformation and heat?

labwork uses a selection of high-quality steel and a reinforced shell design to reduce distortion under thermal cycling and road stress. The material choice and finishing steps limit aging and maintain a stable sealing surface, reducing the risk of future leaks.

• High-strength steel body resists dents from road debris and torque stress.
• Heat-tolerant finish minimizes corrosion and surface fatigue over time.
• Quality testing ensures dimensional stability and long service life.

What functional benefits will I notice after replacing my pan?

Installing a new oil pan restores a secure oil reservoir and sealing surface, preventing oil seepage and keeping contaminants out of the crankcase. That helps maintain proper oil pressure and protects engine components from premature wear due to leaks or contamination.

• Stops existing oil leaks caused by cracks, corrosion, or warped pans.
• Provides a clean, smooth sealing flange for improved gasket performance.
• Restores original oil capacity and drainage characteristics for routine service.

What should I check before buying and installing this pan?

Confirm the pan’s part number and vehicle compatibility, inspect related components, and prepare basic tools for installation. Replacing the oil pan often involves oil removal, gasket replacement, and proper torqueing of bolts to the manufacturer’s specs.

• Verify OEM part number and engine displacement match your vehicle.
• Replace the oil pan gasket and drain plug seal during install.
• Torque bolts to factory spec and refill with correct oil type and volume.

Who is this for: This labwork oil pan is intended for DIY mechanics, professional technicians, and vehicle owners who need a reliable, direct-fit replacement for leaking, damaged, or corroded oil pans on compatible Chevy and GMC 4.8L, 5.3L and 6.0L models. If you value durable steel construction, correct OEM cross-references, and a straightforward swap that restores a proper oil reservoir, this part suits routine maintenance and repair projects.