233-9205 Hydraulic Cylinder Seal Kit for Caterpillar Backhoe Loaders & Motor Graders
Product Overview
The 233-9205 hydraulic cylinder seal kit is a factory-manufactured aftermarket replacement kit cross-referenced against the genuine Caterpillar part number 233-9205 (also written 2339205), listed by Caterpillar as a standard-bore-size hydraulic cylinder seal kit designed for a complete reseal of a standard nominal cylinder (up to 0.25 mm maximum bore oversize). Independent suppliers identify the kit as a 4.00 in bore / 2.00 in rod configuration used on Caterpillar backhoe loader tilt cylinders, motor grader ripper and blade tip cylinders, and many other standard-size cylinder positions.
DJF Seals produces this kit in-house and supplies it at factory-direct wholesale pricing for heavy equipment parts distributors, repair shops and fleet maintenance programs servicing Caterpillar equipment.
Verified Application
The following application data was cross-checked against the Caterpillar parts system, parts resellers and marketplace listings:
| Part Number | 233-9205 (2339205) |
| OEM Reference | Caterpillar 233-9205 “Hydraulic Cylinder Seal Kit – Standard Bore Size” (genuine Cat part per parts.cat.com) |
| Cylinder Position | Tilt cylinder (446/446B/446D/450E backhoe loaders); ripper / blade tip cylinders (motor graders); plus lift, steering, bucket, dozer angling, stabilizer and backhoe stick positions on other equipment — see Fitment Verification |
| Verified Fitments | Caterpillar backhoe loaders 436C, 446, 446B, 446D, 450E; motor graders 12G, 12H, 12K, 12M, 14G, 14H, 14M, 16G, 16H, 16M, 24H, 24M, 120K, 120M, 130G, 140G, 140H, 140K, 140M, 143H, 160H, 160K, 160M, 163H; plus compactors, crawler dozers, track loaders, wheel loaders and other models — see Fitment Verification |
| Bore / Rod (per TornadoParts) | 4.00 in / 2.00 in |
| Condition | New, aftermarket replacement |
Note: specific material grades, pressure rating, temperature range, exact piece counts, certifications and service life are factory data and are not independently verified. Confirm these details with the factory before ordering.
Replacement Scope
Per TornadoParts, the kit is supplied with a press-in wiper, a U-seal & buffer rod seal, a piston seal and one piston; it matches the OEM kit and includes all parts and seals required for a standard-size cylinder reseal. TornadoParts lists compatible OEM cylinder numbers 1007844, 1137754, 1809338, 3G9892 and 9T8944. Exact kit contents and piece counts should be confirmed with the factory against your cylinder before ordering.
Fitment Verification
The part number, cylinder position and fitments were verified through multiple independent sources:
- parts.cat.com (Caterpillar official): 233-9205 Hydraulic Cylinder Seal Kit — Standard Bore Size; complete reseal for a standard nominal bore up to 0.25 mm max oversize.
- TornadoParts: 2339205 replacement kit — rod 2.00 in, bore 4.00 in, press-in wiper, U-seal & buffer rod seal, piston seal, 1 pc piston; OEM cylinder numbers 1007844, 1137754, 1809338, 3G9892, 9T8944; application list covers compactors (815B/815F/816B), crawler dozers (D3–D5 series), graders (12G/12H/12K/12M/14G/14H/14M/16G/16H/16M/24H/24M/120M/130G/140G/140H/140K/140M/143H/160H/160K/160M/163H), loader/backhoes (446, 446B, 450E — tilt), scrapers (613C), skidders (518/518C), track loaders (931B–953C), wheel dozer (814B) and wheel loaders (910/924H/966D/966E/966F/970F/G910/IT18/IT18B/IT18F/IT24F/IT28F).
- Reliable Aftermarket Parts / eBay: “2339205 233-9205 Seal Kit Fits CAT 436C 446 446B” — tilt cylinder seal kit.
- eBay: “233-9205 Seal Kit For Caterpillar 450E 446 446B 446D Backhoe Tilt Cylinder”.
- AllParts.Expert: 233-9205 fitments include 446/446B/446D/450E backhoe loaders, Challenger 65/70/75/85 series, 815/816 compactors and IT18B/IT24F/IT28F/IT28G integrated toolcarriers.
- Motor grader fitments in this page URL (120K, 120M, 140G, 140H, 160H, 160M, 12H, 12M, 140M, 14H, 14M, 16H, 16M) are confirmed by multiple marketplace listings (“GRADER OIL SEAL 2339205 233-9205 for CAT120K 120M 140G 140H 160H 160M MOTOR GRADER SEAL KIT”; eBay “120M, 12H, 12M, 140M, 14H, 14M, 16H, 140G, 160M Backhoe Loaders / Motor Graders”) and by the TornadoParts grader list.
- Conflict note: the current page’s technical claims (0–25 MPa, -20°C to +100°C, NBR materials, ISO 9001 certification, “excavators/loaders/bulldozers/industrial presses”) are generic factory data and are not independently verified; the verified machine categories are the backhoe loader, motor grader, compactor, crawler dozer, track loader, wheel loader, scraper, skidder, feller buncher and integrated toolcarrier lists above.
- Conflict note: CAT 924K/938G/938H wheel loaders appear in one eBay listing but are not in the TornadoParts application list; verify before relying on that fitment. Likewise, the 436C fitment comes from aftermarket listings (Reliable Aftermarket Parts, hydrafilparts) rather than the TornadoParts list.
- URL note: this page’s URL slug reads “backhoe-loaders” while a large part of the listed models are motor graders; both machine categories are confirmed for this kit, and the URL is left unchanged. This part also exists under a /product/-prefixed duplicate URL which is out of scope — no canonical or redirect changes are made.
- Materials, pressure, temperature, piece counts, certifications and service life are not independently verified.
Factory Inspection & Packing
Each 233-9205 kit is assembled and checked at the DJF factory before packing. Sealing elements are placed in labeled poly bags marked with the part number, then packed into export cartons for protection during international shipping. Kits can be packed under DJF branding, neutral packaging, or your own private label for distribution.
Wholesale Ordering
DJF Seals supplies the 233-9205 kit at factory-direct wholesale pricing for distributors, dealers and repair shops. To request a quotation, send your part number and quantity to [email protected] or [email protected]. OEM/ODM service, custom packaging and bulk container shipping are available for regular programs.
MOQ
MOQ: 5 kits.
FAQ
Q: Which machines does the 233-9205 seal kit fit?
A: Verified fitments include CAT 436C, 446, 446B, 446D and 450E backhoe loaders (tilt cylinder) and a wide range of motor graders (12H, 12M, 120K, 120M, 140G, 140H, 140M, 14H, 14M, 160H, 160M, 16H, 16M and more), plus compactors, crawler dozers, track loaders, wheel loaders and integrated toolcarriers. Confirm your cylinder head number and machine serial before ordering.
Q: Which cylinder does this kit service?
A: On 446/446B/446D/450E backhoe loaders it is the tilt cylinder; on motor graders it is used on ripper and blade tip cylinders; the same standard-size kit is also applied to lift, steering, bucket, dozer angling, stabilizer and backhoe stick cylinder positions per the TornadoParts application list.
Q: What are the cylinder dimensions for this kit?
A: TornadoParts lists the kit as 4.00 in bore x 2.00 in rod (standard nominal size, up to 0.25 mm max bore oversize per Caterpillar).
Q: Is 233-9205 a genuine Caterpillar part number?
A: Yes. parts.cat.com lists 233-9205 as a Cat hydraulic cylinder seal kit (standard bore size). This page sells a factory-made aftermarket replacement cross-referenced to that number.
Q: What is the minimum order quantity?
A: MOQ: 5 kits.
