CENTRI® Air Precleaners

Diesel Engine Guide — Turbocharged and Intercooled

  • Determine engine displacement in Cubic Inch Displacement (CID) or Liters, and if the engine is Turbocharged, Turbocharged Aftercooled or Normally Aspirated
  • Check that this is appropriate chart for your engine type. If you are unsure whether the engine is Turbocharged, Turbocharged Intercooled, or Normally Aspirated, please consult the manufacturer's specification sheet for the engine
  • Locate proper operating RPMs at the top of the columns. Then move down the column to the proper CID/Liters
  • Move across proper CID row to the column, labeled CENTRI® Model. The number in this column will be the CENTRI® Air Precleaner required for the engine
  • After selecting the proper CENTRI® unit, measure the O.D. of the air intake. If this size is larger or smaller than the CENTRI® unit, refer to the accessory pages for the adaptor required for installation. CENTRI® unit dimensions can be found on the main product page under specifications
  • Choose the precleaner size by engine air flow requirements, not intake diameter
  • If you do not find your engine here, please e-mail us at info@smartmaintenance.com or call 877-368-4766
2400 RPM 2200 RPM 2100 RPM 2000 RPM 1800 RPM
LTR CID CFM CENTRI®
MODEL
CFM CENTRI®
MODEL
CFM CENTRI®
MODEL
CFM CENTRI®
MODEL
CFM CENTRI®
MODEL
1.5 92 118 EX-25 108 EX-25 103 EX-25 98 EX-25 88 EX-20
2.0 122 157 EX-25 144 EX-25 137 EX-25 131 EX-25 118 EX-25
2.5 153 196 EX-25 180 EX-25 171 EX-25 163 EX-25 147 EX-25
3.0 183 235 EX-40 216 EX-40 206 EX-40 196 EX-40 176 EX-25
3.5 214 274 EX-40 252 EX-40 240 EX-40 229 EX-40 206 EX-40
4.0 244 314 EX-40 287 EX-40 274 EX-40 261 EX-40 235 EX-40
4.5 275 353 EX-40 323 EX-40 309 EX-40 294 EX-40 265 EX-40
5.0 305 392 EX-40 359 EX-40 343 EX-40 327 EX-40 294 EX-40
5.5 336 431 EX-40 395 EX-40 377 EX-40 359 EX-40 323 EX-40
6.0 366 470 EX-50 431 EX-50 412 EX-50 392 EX-40 353 EX-40
6.5 397 510 EX-50 467 EX-50 446 EX-50 425 EX-50 382 EX-40
7.0 427 549 EX-50 503 EX-50 480 EX-50 457 EX-50 412 EX-50
7.5 458 588 EX-50 539 EX-50 514 EX-50 490 EX-50 441 EX-50
8.0 488 627 EX-50 575 EX-50 549 EX-50 523 EX-50 470 EX-50
8.5 519 666 EX-50 611 EX-50 583 EX-50 555 EX-50 500 EX-50
9.0 549 706 EX-60 647 EX-50 617 EX-50 588 EX-50 529 EX-50
9.5 580 745 EX-60 683 EX-50 652 EX-50 621 EX-50 559 EX-50
10.0 610 784 EX-60 719 EX-60 686 EX-50 653 EX-50 588 EX-50
10.5 641 823 EX-60 755 EX-60 720 EX-60 686 EX-50 617 EX-50
11.0 671 862 EX-60 790 EX-60 755 EX-60 719 EX-60 647 EX-50
11.5 702 902 EX-60 826 EX-60 789 EX-60 751 EX-60 676 EX-50
12.0 732 941 EX-60 862 EX-60 823 EX-60 784 EX-50 706 EX-60