Skip to product information

SAP-K031987 AIR COMPRESOR (SINGLE CYLINDER, BA921 STYLE, DETROIT DD13 / DD15 ENGINES)

Low stock


Regular price $1,003.57
Sale price $1,003.57 Regular price

  • Fully secure checkout
  • Trusted by thousands
  • Rated and reviewed


Technical Specifications

Part Type Single Cylinder Air Compressor (BA921 Style)
Part Number SAP-K031987
Brand / Line SAP
Description Heavy-duty single cylinder air compressor – BA921 style, direct drive, water-cooled
Cylinder Diameter Ø 92 mm
Stroke 54 mm
Displacement 360 cm³
Number of Cylinders 1
Air Outlet Port M26x1.5
Drive Type Direct Drive
Cooling Water Cooled
Application Detroit Diesel DD13 / DD15 (EPA07+) engines on heavy-duty trucks

Cross References

Brand Part Number
SAP SAP-K031987
Knorr-Bremse K031987, K031987X (reman)
Bendix / Haldex BA-921 equivalent, K031987X
Automann 170.ACK031987
Application Single Cylinder BA921 Style Air Compressor – Detroit DD13/DD15

Vehicle Fitment

Make Model Model Years Notes
FREIGHTLINER Cascadia 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Detroit DD13 / DD15 engines
Century Class 2008, 2009, 2010, 2011, 2012 Detroit DD13 / DD15 engines
Columbia 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Detroit DD13 / DD15 engines
Coronado 2008, 2009, 2010, 2011, 2012, 2013, 2016 Detroit DD13 / DD15 engines
Classic / Classic XL 2008, 2009, 2010, 2011 Detroit DD13 / DD15 engines
KENWORTH T800 / W900 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Detroit DD13 / DD15 engines
T600 2008, 2009, 2010 Detroit DD13 / DD15 engines
T2000 2008, 2009, 2010, 2011, 2012 Detroit DD13 / DD15 engines
C500 2008, 2009, 2010 Detroit DD13 / DD15 engines
PETERBILT 379 / 389 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Detroit DD13 / DD15 engines
387 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Detroit DD13 / DD15 engines
386 / 388 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Detroit DD13 / DD15 engines
INTERNATIONAL / NAVISTAR ProStar / LoneStar 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Detroit DD13 / DD15 engines
9200i / 9400i / 9900i 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Detroit DD13 / DD15 engines
4300 / 4400 / 4700 / 4900 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Detroit DD13 / DD15 engines
Notes SAP single cylinder BA921-style air compressor (replaces Knorr-Bremse K031987). Used on Detroit Diesel DD13 and DD15 engines (EPA07 and later). Direct fit for heavy-duty trucks and tractors. Also fits select Western Star, Sterling, Mack, and Volvo models with compatible Detroit powerplants.

Score 1
Score 2

Score 3
Score 4

Specifications

Example label

Value

Example label

Value

Example label

Value

Example label

Value

Materials

Add tab content here to outline the materials used in your product, highlighting their origins, properties, and benefits. For instance, if you’re describing a jacket, detail the type of fabric used, its durability, and any eco-friendly qualities. Explain the craftsmanship involved, such as specialized weaving or treatment processes, and mention other materials like leather trims or metal fixtures to assure customers of the product's quality.

Dimensions

Include tab content here to detail the dimensions of your product, specifying its height, width, depth, and weight. For example, if you're describing a piece of luggage, provide measurements like the overall height with and without wheels, the internal packing space, and its empty weight. Clarify any additional dimension-related features, such as adjustable handles or expandable compartments, which offer flexibility and extra capacity.

Care Instructions

Incorporate tab content here to provide detailed care instructions for your product, specifying how to properly maintain and extend its lifespan. For example, if you're discussing apparel, include washing and drying guidelines, such as machine wash cold, tumble dry low, or hand wash only. Specify if any detergents or cleaning agents should be avoided and whether the item should be ironed or dry cleaned.

SAP-K031987 AIR COMPRESOR (SINGLE CYLINDER, BA921 STYLE, DETROIT DD13 / DD15 ENGINES)

$1,003.57