GDUKOP LS High-Volume Oil Pump & Timing Chain Kit for 4.8L–6.0L V8 — Complete Gasket Set, Increased Oil Flow

The GDUKOP LS High-Volume Oil Pump Timing Chain Kit is a complete replacement solution that upgrades oil circulation and refreshes the timing drive for LS-series 4.8L–6.0L V8 engines.

This kit combines a high-volume oil pump, timing chain and sprockets, plus a full timing cover gasket set to deliver an integrated service package for LS1, LS2, LS3, L96, LM7, LR4 and LQ4 engines. Built to fit common GM trucks and SUVs — including Silverado, Sierra, Yukon, Tahoe, Suburban, Avalanche, Trailblazer and Escalade — it replaces OE parts such as 12557840, 12696357 and 12586665 and is intended for engine rebuilding, high-mileage refreshes, or performance-oriented applications where improved oil flow is desired.

How does the high-volume oil pump affect engine lubrication?

The high-volume pump increases oil flow compared with standard units, improving oil circulation throughout the engine without changing core engine geometry. That can raise idle oil pressure and deliver more consistent lubrication under load, which is particularly useful for engines with wear or for hard-working vehicles. Installation should include oil-pump priming and an inspection of the pickup-tube O-ring for reliable operation.

• Approximately 18% greater oil flow versus typical stock pumps
• Better oil distribution at idle and under sustained load
• Designed for rebuilt, high-mileage and some performance LS engines

What components are included and how do they integrate?

This kit supplies all parts needed to restore the timing drive and oil delivery in one package: timing chain, cam and crank sprockets, a timing cover gasket set, and the high-volume oil pump. Those components are chosen to work together so the timing cover and seals are refreshed while the oil pump boosts circulation. Using a matched set reduces hassle and ensures compatibility with the listed LS engines.

• Timing chain with cam and crank sprockets for correct timing geometry
• Complete timing cover gasket set to prevent leaks
• High-volume oil pump engineered to fit LS 4.8L–6.0L platforms

Which vehicles and engine codes will this kit fit?

The kit is tailored for GM small-block V8 LS-family engines in the 4.8L–6.0L range and suits many Chevrolet, GMC and Cadillac trucks and SUVs. It lists compatibility with LS1, LS2, LS3, L96, LM7, LR4 and LQ4 engines, and fits popular models such as Silverado, Sierra, Tahoe, Suburban, Yukon, Avalanche, Trailblazer and Escalade. Verify fitment against your OE part numbers (12557840, 12696357, 12586665, TCS45993) before purchase to ensure an exact match.

• Fits GM LS 4.8L, 5.3L, 5.7L, 6.0L V8 engines
• Compatible with Chevy, GMC and Cadillac trucks and SUVs
• Cross-check OE numbers for precise application match

What should a technician verify during installation?

Professional installation is recommended so the oil pump is primed before initial start-up and the pickup-tube O-ring is inspected for proper sealing. Technicians should also check timing chain tension, torque specs for sprockets, and gasket seating to avoid leaks. Correct installation ensures the increased oil volume functions as intended and the timing system remains reliable.

• Prime the oil pump prior to engine cranking
• Inspect and replace the pickup-tube O-ring as needed
• Confirm timing chain tension and torque values during assembly

Who is this for: The GDUKOP LS High-Volume Oil Pump Timing Chain Kit is meant for mechanics, engine builders and owners restoring or upgrading LS-series V8s — especially high-mileage or rebuilt units and trucks or SUVs used for towing, heavy loads, or moderate performance upgrades. If you need an all-in-one timing drive refresh plus improved oil circulation, and you can verify your engine code or OE part number compatibility, this kit offers a straightforward, performance-minded option.