AUTOBABA Cylinder Head Gasket Kit for GM 4.8L & 5.3L V8 — Includes 30 ES72173 Head Bolts, MLS Gaskets

AUTOBABA Cylinder Head Gasket Kit is a complete replacement set—gaskets, 30 ES72173 head bolts and all seals—built to restore reliable sealing on 4.8L and 5.3L GM V8 engines from 2002–2011.

When a head gasket repair or full engine top-end rebuild is needed on compatible Buick, Chevy, GMC and select Cadillac/Isuzu models, this AUTOBABA kit delivers the parts required to reseal combustion chambers, coolant passages and oil galleries. The set bundles multi-layer steel head gaskets, the correct quantity of ES72173 replacement head bolts, and the common manifold, valley and crank seals technicians replace during a head service—saving time sourcing individual components.

Which vehicles and engines will this kit fit?

This kit is engineered for GM small-block V8 engines with 4.8L and 5.3L displacements across model years primarily from 2002 through 2011. It covers a wide range of Chevy and GMC trucks and SUVs, plus several Buick, Cadillac and Isuzu applications where the cylinder head design matches.

• Chevrolet: Avalanche, Suburban, Silverado, Tahoe, Trailblazer EXT, Express (various years listed).
• GMC: Envoy, Savana, Sierra, Yukon and Yukon XL across compatible years.
• Also compatible with Buick Rainier, Cadillac Escalade, and Isuzu Ascender where specified.

What components are included and why they matter during a head job?

The kit contains everything commonly replaced during a cylinder head service so you won't need to order extra gaskets or seals. Having matched components reduces the risk of leaks and helps ensure consistent torque and sealing when reassembling the engine top-end.

• Multi-layer steel head gaskets sized for 4.8L and 5.3L V8 combustion sealing.
• 30 ES72173 cylinder head bolts to restore proper clamping force and torque accuracy.
• Exhaust and intake manifold gaskets, valley cover gasket, oil pan gasket and crankshaft rear seals.
• Auxiliary items: valve stem seals, knock sensor grommets, O-rings, damping plugs and fiber base plates.

How does this kit handle heat, pressure and long-term sealing?

AUTOBABA’s multi-layer steel gaskets and precision-manufactured seals are designed to resist the high temperatures and cylinder pressure typical of V8 operation. Using fresh head bolts and matched sealing components restores designed clamp loads and reduces the chance of oil or coolant seepage after repair.

• Multi-layer steel construction resists warping and preserves seal under thermal cycling.
• New head bolts restore correct torque-stretch characteristics for even clamping.
• Complete set replaces all common sealing surfaces to eliminate secondary leak paths.

What should technicians and DIYers know before starting the repair?

Confirm engine code and model year compatibility before ordering, and inspect cylinder head flatness and block deck condition during disassembly. Follow vehicle manufacturer torque sequences and replacement intervals for head bolts—some bolts are torque-to-yield and require replacement.

• Verify fitment against your vehicle VIN and the listed model-year ranges.
• Check heads and block for warpage; machine if needed before installing new gaskets.
• Use manufacturer torque specs and replace head bolts as the kit provides the correct quantity.

Who is this for: The AUTOBABA Cylinder Head Gasket Kit is intended for professional mechanics, engine builders and experienced DIYers tackling head gasket replacement or top-end overhauls on GM 4.8L and 5.3L V8 engines. It’s ideal when you want a single, matched package of head gaskets, the ES72173 bolts, and all common seals and grommets required to complete a thorough and reliable head service without sourcing multiple suppliers.