The Cylinder Sleeve, cataloged under National Stock Number 2815-00-988-9653, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-988-9653 |
| Primary Part Number | 8H9659 |
| Item Name | Cylinder Sleeve |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Groove Radius Depth | 4.375 INCHES NOMINAL IN |
| Chamfer Length | 0.031 INCHES NOMINAL IN |
| Bottom Chamfer Length | 0.250 INCHES NOMINAL IN |
| Flange Thickness | 0.438 INCHES NOMINAL IN |
| Design Type | DRY |
| Largest Outside Diameter Width Under Flange | 0.562 INCHES NOMINAL IN |
| Largest Outside Diameter Under Flange | 4.875 INCHES NOMINAL IN |
| Body Outside Diameter | 4.625 INCHES NOMINAL IN |
| Top Intake Port | NOT INCLUDED |
| Style Designator | WET, RELIEVED, THREE SEAL GROOVES |
| Top Inside Chamfer | INCLUDED |
| Valve Recess | NOT INCLUDED |
| Body Length | 6.938 INCHES NOMINAL IN |
| Intake Hole | NOT INCLUDED |
| Grooved Portion Outside Diameter | 4.625 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 45.0 |
| Bottom Inside Chamfer | INCLUDED |
| Bore Diameter | 4.000 INCHES NOMINAL IN |
| Material | STEEL |
| Flange Outside Diameter | 5.000 INCHES NOMINAL IN |
| Groove Width | 0.250 INCHES NOMINAL IN |
| Grooved Portion Width | 0.750 INCHES NOMINAL IN |
| Bottom Chamfer Angle in Deg | 30.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8H9659 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2815-00-988-9653 is a Cylinder Sleeve, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-988-9653 has 1 manufacturer part number on file: 8H9659 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 8H9659: Groove Radius Depth: 4.375 INCHES NOMINAL IN; Chamfer Length: 0.031 INCHES NOMINAL IN; Bottom Chamfer Length: 0.250 INCHES NOMINAL IN; Flange Thickness: 0.438 INCHES NOMINAL IN. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.