BPS Detroit K31 Turbo - 74mm Billet Wheel

Unleash the ultimate performance from your Detroit Series 60 engine with the BPS K31 CAE 74mm Turbocharger.

Precision-crafted for single turbo conversions. Engineered with a T51R-modified compressor volute for lightning-fast spool-up and an internally gated K31 design for rapid response and extended durability, this turbo delivers unmatched power. The 74mm CAE (Computer-Aided Engineering) billet compressor wheel optimizes airflow for superior top-end performance, supporting 450-600HP. Built to surpass OEM standards, the BPS K31 ensures exceptional reliability and efficiency for heavy-duty trucks and equipment. Backed by a 1-year unlimited mileage warranty, it’s the perfect upgrade for your Detroit Series 60. Shop now for fast shipping, no core charge and expert support!

Key Features:

• 74mm CAE billet compressor wheel for enhanced top-end airflow with a 1.28 A/R Turbine Housing.

• T51R-modified compressor volute for rapid spool-up

• Internally gated K31 for quick response and long service life

• Ideal for Detroit Series 60 single turbo conversions (450-600HP)
  

• NOW available with BPS Full Billet Wastegate Pod upgrade.  Crafted from high-grade billet aluminum, this pod resists wear, corrosion, and leaks, providing long-lasting reliability that surpasses stamped alternatives.  Highly recommended for heavy hauling operations, this housing helps maintain low Exhaust Gas Temperatures (EGTs) while enabling quicker spool-up, resulting in improved throttle response, fuel efficiency, and overall engine longevity.  Standard with Gate actuation starts at 27 PSI and fully opens at 30 PSI.  The industry-leading BPS Billet starts gate action at 34 psi for gradual boost management, fully opening at 38 PSI to deliver consistent performance across varying loads and elevations.

Cross Reference Part Numbers:

• The Detroit Series 60 (12.7L/14L) uses Garrett/Holset OEM; Borg Warner K31/S400 equivalents.

  OEM Replacement Turbo Part Numbers (Garrett/Holset):

  • GTA4502V, 23534360, 758204-9006, 758204-9007, 758160-9006, 758160-9007, 466445-0018, 714787-0001

  Borg Warner Turbo Part Numbers (Replacements/Equivalents):

  • 171702 (S400/S471, cross 23523197)
  • 172743 (K31, cross 23518588)
  • 171701 (S400/S471, 320-365HP)
  • 57849882005 (GTA45)