1986-1987 Detroit High Altitude Stanadyne Mechanical Injection Pump (DB2829-4506)

High-altitude calibrated Stanadyne DB2 mechanical injection pump for 1986-1987 GM C/K 1500 and 2500 trucks running the 6.2L Detroit Diesel V8. Tuned for the leaner fuel ratio and reduced enrichment that trucks running consistently above ~5,000 ft need to stay clean and smooth.

Mechanically identical to the standard DB2829 pump for this platform, calibrated differently. If your factory pump tag carried the high-altitude callout, this is the right replacement — a sea-level pump up high will smoke black and idle rough.

• High-Altitude Stanadyne DB2 Pump for 6.2L Detroit Diesel
• Leaner Fuel Calibration for Elevations Above ~5,000 ft
• Direct Bolt-On — Factory Lines & Mounting
• Mechanical Injection — No ECM or Electronics
• For Stock-Power Trucks
• Part Number: DB2829-4506

• Wrong pump for low-altitude trucks. Use the standard-calibration DB2829 variant if you live below ~5,000 ft.
• If the factory pump tag doesn't carry the "HA" callout, this isn't the right pump.
• This is a repair and return item, you must send us your core to send to to Industrial Injection for rebuild.