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Caterpillar C18 Seals & O-Rings
Seals & O-Rings for Caterpillar C18 engines. Every part in this collection is listed for the C18 by its catalog application record, not by its title. Check your engine serial number or CPL against the part page before ordering.
51 part numbers. Match the part number and your engine serial number — not sure? Call or text (720) 445-6249.
| Part # | Replaces | Description | Fits | Price | Availability |
|---|---|---|---|---|---|
| 336033 | Caterpillar 142-2329 Caterpillar 1422329 |
Caterpillar 3406 Oil Return Seal, PAI (OEM 1422329), Pack of 1 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$9.29 | Ships from supplier · Lead time confirmed when you order |
| 321329 | Caterpillar 5P-7816 Caterpillar 5P7816 Cummins 4890088 |
Caterpillar O-Ring, PAI (OEM 5P7816), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$44.90 | Ships from supplier · Lead time confirmed when you order |
| 321328 | Caterpillar 3P-1979 Caterpillar 3P1979 Caterpillar 5E-8767 +1 more |
Caterpillar O-Ring, PAI (OEM 5E8767), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$51.20 | Ships from supplier · Lead time confirmed when you order |
| 321327 | Caterpillar 230-3728 Caterpillar 2303728 |
Caterpillar O-Ring, PAI (OEM 2303728), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$23.52 | Ships from supplier · Lead time confirmed when you order |
| 321326 | Caterpillar 153-0500 Caterpillar 1530500 Caterpillar 5M0281 +1 more |
Caterpillar O-Ring, PAI (OEM 8J4351), Pack of 4 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$21.24 | Ships from supplier · Lead time confirmed when you order |
| 321325 | Caterpillar 6V3683 | Caterpillar O-Ring, PAI (OEM 6V3683), Pack of 4 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$15.28 | Ships from supplier · Lead time confirmed when you order |
| 321324 | Caterpillar 2U0010 Caterpillar 8C0624 Caterpillar 8T5917 |
Caterpillar O-Ring, PAI (OEM 8C0624), Pack of 4 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$15.28 | Ships from supplier · Lead time confirmed when you order |
| 321323 | Caterpillar 3E6747 | Caterpillar O-Ring, PAI (OEM 3E6747), Pack of 4 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$14.56 | Ships from supplier · Lead time confirmed when you order |
| 321320 | Caterpillar 112-3102 Caterpillar 1123102 Caterpillar 118-5068 +1 more |
Caterpillar O-Ring, PAI (OEM 1123102), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$24.80 | Ships from supplier · Lead time confirmed when you order |
| 321318 | — | Cat Injector Sleeve O-Ring Kit, PAI , Pack of 1 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$33.20 | Ships from supplier · Lead time confirmed when you order |
| 321316 | Caterpillar 107-5769 Caterpillar 1075769 Cummins 4992509 |
Caterpillar O-Ring, PAI (OEM 1075769), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$58.30 | Ships from supplier · Lead time confirmed when you order |
| 321313 | Caterpillar 5W1849 Caterpillar 8T9527 Caterpillar 774091 +1 more |
Caterpillar O-Ring, PAI (OEM 8T9527), Pack of 5 | CATERPILLAR 3400 SERIES CATERPILLAR C15 ENGINE +2 more |
$14.55 | Ships from supplier · Lead time confirmed when you order |
| 321312 | Caterpillar 7R2788 Caterpillar 7X4805 Fuller 5568544 +1 more |
Caterpillar 3406E / C15 / C16 O-Ring | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$22.45 | Ships from supplier · Lead time confirmed when you order |
| 321310 | Caterpillar 250-0466 Caterpillar 2500466 |
Caterpillar O-Ring, PAI (OEM 2500466), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$24.00 | Ships from supplier · Lead time confirmed when you order |
| 321306 | — | Caterpillar 3406E / C15 / C16 O-Ring Kit | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$79.36 | Ships from supplier · Lead time confirmed when you order |
| 321305 | Caterpillar 136-7226 Caterpillar 1367226 |
Caterpillar O-Ring, PAI (OEM 1367226), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$19.85 | Ships from supplier · Lead time confirmed when you order |
| 321303 | Caterpillar 156-5198 Caterpillar 1565198 |
Caterpillar O-Ring, PAI (OEM 1565198), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$34.70 | Ships from supplier · Lead time confirmed when you order |
| 321301 | Caterpillar 6V3908 | Caterpillar O-Ring, PAI (OEM 6V3908), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$34.00 | Ships from supplier · Lead time confirmed when you order |
| 321299 | Caterpillar 5P7701 | Caterpillar O-Ring, PAI (OEM 5P7701), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$16.35 | Ships from supplier · Lead time confirmed when you order |
| 321298 | Caterpillar 061-7540 Caterpillar 0617540 Caterpillar 61-7540 +5 more |
Caterpillar O-Ring, PAI (OEM 0617540), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$21.20 | Ships from supplier · Lead time confirmed when you order |
| 321296 | Caterpillar 215-3198 Caterpillar 2153198 Caterpillar 3E6766 |
Caterpillar O-Ring, PAI (OEM 2153198), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +4 more |
$8.94 | Ships from supplier · Lead time confirmed when you order |
| 321294 | Caterpillar 113-5304 Caterpillar 3P-0650 Caterpillar 3P0650 +1 more |
Caterpillar O-Ring, PAI (OEM 3P0650), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$47.40 | Ships from supplier · Lead time confirmed when you order |
| 321288 | Caterpillar 061-8639 Caterpillar 0618639 Caterpillar 61-8639 +4 more |
Caterpillar O-Ring, PAI (OEM 618639), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$8.22 | Ships from supplier · Lead time confirmed when you order |
| 321285 | — | Caterpillar 3406E/C15/C16/C18 Fuel Injection O-Ring Kit, PAI (OEM 2481394), Pack of 1 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$8.35 | Ships from supplier · Lead time confirmed when you order |
| 321284 | Caterpillar 230-3775 Caterpillar 2303775 Caterpillar 9X7419 |
Caterpillar O-Ring, PAI (OEM 2303775), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$26.94 | Ships from supplier · Lead time confirmed when you order |
| 321283 | Caterpillar 119-8784 Caterpillar 1198784 Caterpillar 6V3550 +1 more |
Caterpillar O-Ring, PAI (OEM 9X7418), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +4 more |
$23.88 | Ships from supplier · Lead time confirmed when you order |
| 321282 | Caterpillar 6I1420 Caterpillar 9X7317 |
Caterpillar O-Ring, PAI (OEM 9X7317), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +4 more |
$14.10 | Ships from supplier · Lead time confirmed when you order |
| 321278 | Caterpillar 109-0077 Caterpillar 1090077 Caterpillar 4F7387 |
Caterpillar HNBR O-Ring, PAI (OEM 1090077), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$22.20 | Ships from supplier · Lead time confirmed when you order |
| 321277 | Caterpillar 122-3772 Caterpillar 1223772 Caterpillar 4K6804 |
Caterpillar HNBR O-Ring, PAI (OEM 1223772), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$31.85 | Ships from supplier · Lead time confirmed when you order |
| 321276 | Caterpillar 214-7568 Caterpillar 2147568 |
Caterpillar O-Ring, PAI (OEM 2147568), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +4 more |
$26.30 | Ships from supplier · Lead time confirmed when you order |
| 321269 | Caterpillar 166-2904 Caterpillar 1662904 |
Caterpillar O-Ring, PAI (OEM 1662904), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$16.32 | Ships from supplier · Lead time confirmed when you order |
| 321268 | Caterpillar 166-2903 Caterpillar 1662903 Navistar 1841992 +2 more |
Caterpillar Viton O-Ring, PAI (OEM 1662903), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +38 more |
$20.88 | Ships from supplier · Lead time confirmed when you order |
| 321267 | Caterpillar 117-8801 Caterpillar 1178801 Caterpillar 9X7422 |
Caterpillar Viton O-Ring, PAI (OEM 1178801), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$71.70 | Ships from supplier · Lead time confirmed when you order |
| 321266 | Caterpillar 9X7430 | Caterpillar O-Ring, PAI (OEM 9X7430), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$18.90 | Ships from supplier · Lead time confirmed when you order |
| 321264 | Caterpillar 5P0840 | Caterpillar O-Ring, PAI (OEM 5P0840), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$47.40 | Ships from supplier · Lead time confirmed when you order |
| 321263 | Caterpillar 5E8771 Navistar 1818727 Navistar 1818727C1 |
Caterpillar / International 3406E / C15 / C16 O-Ring | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +51 more |
$45.90 | Ships from supplier · Lead time confirmed when you order |
| 321251 | Caterpillar 061-7539 Caterpillar 0617539 Caterpillar 61-7539 +5 more |
Caterpillar Viton O-Ring, PAI (OEM 617539), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$47.40 | Ships from supplier · Lead time confirmed when you order |
| 321249 | Caterpillar 323-7347 Caterpillar 3237347 Caterpillar 6J2245 +7 more |
Caterpillar Viton O-Ring, PAI (OEM 6J2245), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +10 more |
$31.80 | Ships from supplier · Lead time confirmed when you order |
| 321239 | Caterpillar 06-3710 Caterpillar 063710 Caterpillar 2U5316 +17 more |
Caterpillar / Cummins 3406E / C15 / C16 O-Ring | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +7 more |
$14.95 | Ships from supplier · Lead time confirmed when you order |
| 321233 | Caterpillar 5H7704 Caterpillar 6L8166 Caterpillar 7M2089 +1 more |
Caterpillar Silicone O-Ring, PAI (OEM 5H7704), Pack of 4 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$21.28 | Ships from supplier · Lead time confirmed when you order |
| 321230 | Caterpillar 060-7582 Caterpillar 0607582 Caterpillar 238-5080 +9 more |
Caterpillar Viton O-Ring, PAI (OEM 2385080), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$30.50 | Ships from supplier · Lead time confirmed when you order |
| 321224 | Caterpillar 6V5100 | Caterpillar O-Ring, PAI (OEM 6V5100), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$39.80 | Ships from supplier · Lead time confirmed when you order |
| 321223 | Caterpillar 6V5048 Caterpillar 9X0934 Cummins 3036666 +4 more |
Caterpillar Viton O-Ring, PAI (OEM 6V5048), Pack of 10 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$28.30 | Ships from supplier · Lead time confirmed when you order |
| 321221 | Caterpillar 109-0078 Caterpillar 1090078 Caterpillar 4F7389 +3 more |
Caterpillar Buna N O-Ring, PAI (OEM 1090078), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$15.72 | Ships from supplier · Lead time confirmed when you order |
| 321218 | Caterpillar 077-3520 Caterpillar 109-0093 Caterpillar 1090093 +2 more |
Caterpillar Buna N O-Ring, PAI (OEM 4J7533), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$14.95 | Ships from supplier · Lead time confirmed when you order |
| 321217 | Caterpillar 109-0076 Caterpillar 1090076 Caterpillar 6L1651 +1 more |
Caterpillar HNBR O-Ring, PAI (OEM 1090076), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +3 more |
$32.70 | Ships from supplier · Lead time confirmed when you order |
| 321212 | Caterpillar 109-0072 Caterpillar 1090072 Caterpillar 8T7168 +1 more |
Caterpillar HNBR O-Ring, PAI (OEM 1090072), Pack of 6 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$26.94 | Ships from supplier · Lead time confirmed when you order |
| 321209 | Caterpillar 114-2687 Caterpillar 1142687 Caterpillar 8T7136 +3 more |
Caterpillar HNBR O-Ring, PAI (OEM 1142687), Pack of 5 | CATERPILLAR 3406E SERIES CATERPILLAR C15 ENGINE +2 more |
$15.75 | Ships from supplier · Lead time confirmed when you order |
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