Duncan Ag and Auto Repair

10/15/2026

SOLD For Sale:
2006 Ford F-550 123,532 Miles $17,500
13 Ft Reading Utility Box, 3200 Liftmoore Crane
6.0 L Powerstroke Diesel:
Promaxx Performance Heads, ARP Head Studs, New Injectors and Injector Wiring Harnesses
New HPOP with Updated Stand Pipes, Dummy Plugs, and Rail Ni***es
Bullet Proof Diesel: EGR Cooler, Engine Oil Cooler, Water Pump, Mechanical Fan Clutch
Poly Fuel Tank to Eliminate Stoke Tank Liner Paint Flakes, K&N Cold Air Intake, New COC Hoses
and Clamps, ICP Sensor, IPR Valve, EGR Valve, Intake Manifold Sensor Hose.
Regular Maintenance Performed On Schedule with Records. Also the front steer knuckle ball
joints, tie rods, and alignment, Brakes, Rear Wheel Bearings. Good Tires Hercules Strong Guard
H-DO 14 Ply 225/70/R19.5
SERIOUS INQUIRIES ONLY: I’m only selling this as I am downsizing the Field Service Business.
Call Duane at 308-289-1617

05/21/2026

Thank you for supporting our local business. We appreciate all our customers!

04/07/2026

Are your springs sprung? Spring on into Duncan repair this Spring for all your automotive repairs.
3/4 ton pickup leaf spring replacement

03/05/2026

Retrofitting from CP4 to CP3 injection pump into 6.6 Duramax

11/11/2025

09/20/2025

Duramax showing DEF codes. Removed Tank. Verified DEF quality. Cleaned electrical connectors. Performed Service REGEN and calibrated sensors. Issue resolved. "

09/03/2025

Chevy traverse spark plug replacement.

We can do automotive tune-up and more. We have a lift bay and 4 other bays in our shop.

Master certified technician with almost 30 years of experience.

08/03/2025

2018 Silverado fuel pump replacement. We work on automotive, diesel and gas. 30 years experience, Master tech certified, family owned business.

07/15/2025

Certified Diesel Mobile and Shop Repair. Mechanical, Air Conditioning, Electronics, Welding. Over 30 years experience.

06/30/2025

3/4 ton duramax goes up on the lift. Bring in your automotive needs today!