Performance Engine Rebuild Re-Ring Kit for GMC Yukon (2000-2013) 4.8L 5.3L

Complete Engine Re-Ring Rebuild Kit for 2000-2013 GMC Yukon (GMT800 / GMT900)

What it Does: The Performance Engine Rebuild Re-Ring Kit restores combustion cylinder sealing, eliminates crankcase blow-by, and renews connecting rod and main journal hydrodynamic bearings on 2000-2013 GMC Yukon 4.8L and 5.3L V8 engines.

The Stock GMC Yukon Ring Pack & Bearing Degradation

Factory GM Gen III and Gen IV small block engines—including the LR4, LM7, and LY5 found across GMT800 and GMT900 platforms—frequently suffer from oil control ring sticking, carbon fouling, and loss of radial ring tension under sustained thermal cycling. Over extended service intervals, degraded piston-to-wall sealing increases blow-by, contaminates engine oil, and accelerates micro-welding and spalling on factory babbitt-layer journal bearings.

The Engineering Solution

This re-ring overhaul kit restores cylinder pressure integrity and hydrodynamic oil wedge stability. Precision-machined replacement piston rings provide consistent wall contact to halt oil migration into the combustion chamber. Paired with heavy-duty rod and main bearings that resist fatigue under towing loads, the kit includes high-recovery Multi-Layer Steel (MLS) cylinder head gaskets to prevent deck-surface combustion leaks, alongside precision molded fluoroelastomer crank and cover seals to eliminate high-vacuum oil seepage.

What's Included

• 1 Gen III Valley Cover Gasket (12558178)
• 2 LS1/LS2/LS3 Header Gaskets
• 1 LS Oil Pan Gasket
• 2 LS Water Pump Gaskets
• 1 LS Front Cover Gasket
• 2 LS Valve Cover Gaskets
• 1 LS Damper Seal
• 1 LS Rear Cover Gasket
• 1 Rear Main Seal
• 4 Water Crossover/Block Off Gaskets (12551933)
• 1 Oil Filter Adapter Bypass Gasket (12611384)
• 2 Knock Sensor Grommets (12558177)
• 2 Multi-Layer Steel (MLS) Head Gaskets
• 1 Bolt Kit
• 1 Piston Rings Set
• 1 Main Bearings & Connecting Rod Bearings Set

Technical Specifications

Compatibility

• 2000-2009 GMC Yukon 4.8L V8 (GMT800 / GMT900)
• 2000-2013 GMC Yukon 5.3L V8 (GMT800 / GMT900)
• 2000-2013 GMC Yukon XL 1500 5.3L V8 (GMT800 / GMT900)

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT800 and GMT900 Yukon?

Yes, this kit is engineered for the 2000-2013 GMC Yukon equipped with 4.8L and 5.3L OHV V8 engines. This kit will not fit 6.0L or 6.2L engines due to differing cylinder bore diameters, and it does not include intake manifold gaskets.

Are intake manifold gaskets included in this rebuild kit?

No, intake manifold gaskets are not included and must be selected based on your application's specific intake port geometry (cathedral vs. rectangular).

The GMC Truck Standard

Full-size GMC Yukon platforms demand uncompromised low-end torque and sustained oil pressure under severe towing duty; renewing your internal clearances and ring seal restores factory workhorse endurance.