Hex 6 stocks an extensive inventory of OEM and aftermarket diesel engine parts for commercial trucks, heavy equipment, agricultural machinery, and off-highway equipment. From fuel injectors and turbochargers to cylinder heads and complete rebuild kits - call us with your part number or engine model
The Best Engine and Engine Components in Tyler, TX
At Hex 6 Diesel Services, we aim to enhance your vehicle's performance with the best engine parts available. Our inventory features a wide range of OEM and high-quality aftermarket engine components sourced from leading brands and the most trusted manufacturers. Whether you're looking for the unmatched quality of OEM parts or the cost-effective benefits of aftermarket alternatives, we offer reliable solutions without ever compromising on quality.
Our Engine Components Inventory
Our inventory includes a broad selection of essential engine parts, so you can always find exactly what you need for any repair or upgrade. Below is a list of the engine and engine components we offer:
- Alternators and Starters
- Belt Tensioner
- Belts
- Cylinder Heads
- Cylinder Kits
- Cylinder Liners
- Fan Blades
- Fan Clutch
- Filters
- Fuel Injectors
- Fuel Supply/Injection Pump
- Gaskets
- Hoses
- Injection Tubes
- Level Sensors
- Oil Pressure Sensors
- Oil Pumps
- Oil Seal Crankshaft
- Pistons
- Piston Rings
- Radiators
- Rod & Main Bearing
- Seal Valve
- Speed Sensors
- Temperature Sensors
- Thermostats
- Turbochargers
- Valves - Intake - Exhaust
- Water Pumps
Vehicles These Are Suitable For
At Hex 6 Diesel Services, we offer engine parts that cater to a wide variety of vehicles, supporting numerous industries that operate throughout Texas. Whether for on-highway commercial vehicles or off-highway heavy equipment, our parts are suitable for:
- Oil and gas industry equipment
- Agricultural machinery
- Municipal vehicles
- Heavy construction equipment
- Commercial on-highway trucks, trailers, and tankers
- Recreational vehicles and buses
- Diesel trucks
Our parts are compatible with various major equipment and vehicle brands, so whatever it is you need, we’ve got you covered. These include:
- Ambac
- Bosch
- Bobcat
- Case
- Caterpillar
- Cummins
- Delco Remy
- Deutz
- Detroit Diesel
- Doosan
- Donaldson
- FPT Engines
- Ford
- Freightliner
- GMC
- Horton
- Hyundai
- John Deere
- Kobelco
- Komatsu
- Kubota
- Leece Neville
- Link Belt
- Loadhandler Power Products
- Mack
- MaxForce
- Navistar
- Paccar
- Perkins
- Peterbilt
- Prestolite Electric
- Samsung
- Sumitomo
- Takeuchi
- Takachi
- Volvo
- Yanmar
Parts + Installation - Same Visit
Engine parts are among the most labor-intensive components to install correctly. Sourcing your parts from Hex 6 means our engine technicians can complete the repair in the same visit - with the correct torque specs, clearances, and procedures for your specific engine platform.
This is especially valuable for:
- Injector replacements where calibration and coding may be required after installation
- Turbocharger replacements where oil feed lines and pre-lubrication procedures matter
- Cylinder head jobs where head bolt torque sequence and gasket seating are critical
- Full engine rebuilds where all components need to be installed as a matched set
Get in Touch Now: Call 903-343-9527!
Get the most out of your engine with the help of our team at Hex 6 Diesel Services. Call us at 903-343-9527 today; we’ll be happy to answer any questions you may have and find the perfect part for you.
Frequently Asked Questions
How do I know if my fuel injectors need replacing?
Common signs include black or white smoke from the exhaust, rough idle or misfiring, poor fuel economy, hard starting, and loss of power under load. On modern electronically-controlled engines, injector fault codes from a diagnostic scan are the most reliable indicator. Injector issues often worsen gradually — catching them early avoids damage to the cylinder head and other downstream components.
What's the difference between a new and remanufactured turbocharger?
A remanufactured turbocharger is a core unit that has been fully disassembled, inspected, cleaned, and rebuilt with new bearings, seals, and wear components to OEM specifications. Quality reman turbos from reputable manufacturers perform comparably to new at a significantly lower cost. New turbos are the right choice for high-performance applications or where a warranty is required. We carry both - call us with your engine model and we'll advise on the best option.
Do you carry Cummins engine parts?
Yes. Cummins is one of the most widely used diesel engine platforms in commercial trucks and equipment, and we stock a broad range of Cummins engine components — injectors, fuel pumps, cylinder heads, water pumps, turbochargers, and more - for ISX, ISB, ISC, ISL, and other common series.
Do you carry Detroit Diesel parts?
Yes. We stock Detroit Diesel engine components for DD13, DD15, DD16, Series 60, and other Detroit platforms - including injectors, EGR components, turbochargers, and gasket sets.
Do you carry EGR and DPF components?
Yes. EGR valves, EGR coolers, DPF filter components, SCR system parts, and DEF injectors are all stocked or sourceable. Emissions system components are increasingly common service items on modern Tier 4 equipment and post-2007 on-highway trucks.
Can you help me identify the right parts for an engine rebuild?
Yes. Call us with your engine make, model, serial number, and for Cummins engines the CPL number - or for Detroit engines the arrangement number. These identifiers allow us to pull the exact spec for your engine and confirm the correct rebuild kit, head gasket set, and component dimensions.
How quickly can you source a part that's not in stock?
For most common engine components, we can source parts within 24–48 hours through our supplier network. Specialty items, older engine platforms, or complete reman engines may take longer. Call us with your part number for a specific availability timeline.
Areas We Also Serve For Engine and Engine Components Sales in Texas
Hex 6 Diesel Services proudly extends its services beyond Tyler, TX, to the following areas: Longview, TX; Kilgore, TX; Jacksonville, TX; Henderson, TX; Athens, TX; Palestine, TX; Sulphur Springs, TX; Marshall, TX; Nacogdoches, TX; Lufkin, TX; Corsicana, TX; Dallas, TX; Plano, TX; Garland, TX; Mesquite, TX; Terrell, TX; Greenville, TX; Mount Pleasant, TX; Paris, TX. No matter where you are in these regions, you can rely on us for your engine component needs.
Need Diesel Engine Parts in Tyler, TX?
Call our parts team with your engine model, serial number, or part number and we'll get you taken care of - in stock or sourced fast. Need the repair done too? We can handle both in the same visit.
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Contact HEX 6
Hex 6 serves Tyler, TX and the surrounding East Texas area from our 36-bay shop and a fleet of mobile service trucks - available for scheduled maintenance, emergency roadside assistance, and on-site repairs for trucks, trailers, and equipment. Can't bring it to us? We'll come to you.

