Selling a genuine OEM left-bank cylinder head, casting 12620214, designed for 5.3 L EcoTec3 engines. Perfect for:
• 2014-2020 Chevrolet Silverado 1500 (5.3L)
• 2014-2020 GMC Sierra 1500 (5.3L)
• Chevy/GMC full-size SUVs using 5.3 EcoTec3 — Tahoe, Suburban, Yukon, Yukon XL (where 5.3 was offered)
Condition: Used OEM head, no cracks or broken threads. Deck and combustion chambers clean. Valves/springs present (see photos). Ideal for rebuild or swap.
Included: Left-bank cylinder head only (no gaskets, bolts, intake, or accessories). Buyer should verify casting number (12620214) and engine code before ordering.
Why buy this head?
✅ Broad 5.3 EcoTec3 compatibility — not just truck-only.
✅ OEM casting — reliable foundation for rebuilds or swaps.
✅ Hard to find head in clean condition — great for SUV upgrades or repair jobs.
