Best prices and customer service on Duramax LML heads out there. Shipped fast and very cool about how long it took to get the cores back.
Great company!! The heads arrived in great shape with all the parts. Very quick email responses to questions, comments, and concerns. One little issue with a few parts but was taken care of promply
Replacement heads for my 3.5 EcoBoost worked perfect. The kit had everything I needed. The customer service was excellent. Highly recommend this company.
I got my cylinder head quicker than expected. I would buy from this company again
Remanufactured GM V6 4.3L Direct Injection Casting # 344 Pair Cylinder Heads with Head Gasket Set and Bolts
Original price was: $1,030.00.$910.00Current price is: $910.00.
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Additional Info
Remanufactured GM Chevrolet 4.3L Direct Injection 344 Casting Cylinder Heads – Pair (With Gasket Set & Bolts)
Premium OEM-Quality Replacement Kit With Complete Installation Hardware
This is a professional-grade pair of remanufactured cylinder heads for GM 4.3L Direct Injection engines featuring the 344 casting. Each head is precision-machined to meet or exceed original equipment standards, providing a reliable and durable solution for your engine rebuild. This comprehensive kit includes a high-quality head gasket set and head bolts to ensure a seamless, leak-free installation.
🛠️ In-House Machining Process
- Cleaning: Fully disassembled and thermally cleaned.
- Soda Blasted: Castings are blasted with Sodium Bicarbonate. Because baking soda is water-soluble, there is zero risk of abrasive media clogging oil passages.
- Pressure Testing: Tested to 60 PSI to ensure no cracks or porosity leaks.
- Surfacing: All heads are resurfaced on our Rottler S85A for a precision gasket-sealing surface.
- Valve Job: Multi-angle valve job performed; every port is Vacuum Tested to ensure valves are seated 100% airtight.
📊 Technical Specifications
- Engine Size: 4.3L V6
- Casting Number: 344
- Condition: Remanufactured
- Fuel Injection: Direct Injection
- Included Components: Pair of cylinder heads, head gasket set, and cylinder head bolts
🚛 Fitment Data
Common Applications:
- GMC Sierra 1500 Pickup: 2014–2016 GMC Sierra 1500 Pickup (4.3L)
- Chevrolet Silverado 1500 Pickup: 2014–2016 Chevrolet Silverado 1500 Pickup (4.3L)
- Chevrolet Express 2500 Van: 2018–2024 Chevrolet Express 2500 Van (4.3L)
- Chevrolet Express 3500 Van: 2018–2024 Chevrolet Express 3500 Van (4.3L)
- GMC Savana 2500 Van: 2018–2024 GMC Savana 2500 Van (4.3L)
- GMC Savana 3500 Van: 2018–2024 GMC Savana 3500 Van (4.3L)
- GMC Sierra 1500 Pickup: 2017–2018 GMC Sierra 1500 Pickup (4.3L)
- GMC Sierra 1500 Pickup: 2019 GMC Sierra 1500 Pickup (4.3L New Style – Mirrors Mount On Door Skin)
- GMC Sierra 1500 Pickup: 2020–2021 GMC Sierra 1500 Pickup (4.3L)
- Chevrolet Silverado 1500 Pickup: 2017–2018 Chevrolet Silverado 1500 Pickup (4.3L)
- Chevrolet Silverado 1500 Pickup: 2019 Chevrolet Silverado 1500 Pickup (4.3L New Style – Mirrors Mount On Door Skin)
- Chevrolet Silverado 1500 Pickup: 2020–2021 Chevrolet Silverado 1500 Pickup (4.3L)
[+] Click to View Full Detailed Fitment List
2015 GMC Sierra 1500 Pickup 4.3L
2016 GMC Sierra 1500 Pickup 4.3L
2014 Chevrolet Silverado 1500 Pickup 4.3L
2015 Chevrolet Silverado 1500 Pickup 4.3L
2016 Chevrolet Silverado 1500 Pickup 4.3L
2018 Chevrolet Express 2500 Van 4.3L
2019 Chevrolet Express 2500 Van 4.3L
2020 Chevrolet Express 2500 Van 4.3L
2021 Chevrolet Express 2500 Van 4.3L
2022 Chevrolet Express 2500 Van 4.3L
2023 Chevrolet Express 2500 Van 4.3L
2024 Chevrolet Express 2500 Van 4.3L
2018 Chevrolet Express 3500 Van 4.3L
2019 Chevrolet Express 3500 Van 4.3L
2020 Chevrolet Express 3500 Van 4.3L
2021 Chevrolet Express 3500 Van 4.3L
2022 Chevrolet Express 3500 Van 4.3L
2023 Chevrolet Express 3500 Van 4.3L
2024 Chevrolet Express 3500 Van 4.3L
2018 GMC Savana 2500 Van 4.3L
2019 GMC Savana 2500 Van 4.3L
2020 GMC Savana 2500 Van 4.3L
2021 GMC Savana 2500 Van 4.3L
2022 GMC Savana 2500 Van 4.3L
2023 GMC Savana 2500 Van 4.3L
2024 GMC Savana 2500 Van 4.3L
2018 GMC Savana 3500 Van 4.3L
2019 GMC Savana 3500 Van 4.3L
2020 GMC Savana 3500 Van 4.3L
2021 GMC Savana 3500 Van 4.3L
2022 GMC Savana 3500 Van 4.3L
2023 GMC Savana 3500 Van 4.3L
2024 GMC Savana 3500 Van 4.3L
2017 GMC Sierra 1500 Pickup 4.3L
2018 GMC Sierra 1500 Pickup 4.3L
2019 GMC Sierra 1500 Pickup 4.3L New Style – Mirrors Mount On Door Skin
2020 GMC Sierra 1500 Pickup 4.3L
2021 GMC Sierra 1500 Pickup 4.3L
2017 Chevrolet Silverado 1500 Pickup 4.3L
2018 Chevrolet Silverado 1500 Pickup 4.3L
2019 Chevrolet Silverado 1500 Pickup 4.3L New Style – Mirrors Mount On Door Skin
2020 Chevrolet Silverado 1500 Pickup 4.3L
2021 Chevrolet Silverado 1500 Pickup 4.3L
📦 Core Return & Warranty
- Core Process: No upfront core fee. Receive your new heads and compare them to your originals before installation. Once complete, use the pre-paid return label included in your shipment. Cores must be returned within 30 days. Click here for Core Policy.
- Warranty: Includes a 2-Year Unlimited Mileage Warranty. Click here for Warranty details.
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