Cummins Genuine Gear Room Cover Gasket 3177160

The Gear Room Cover Gasket 3177160 is an OEM-grade component engineered for Cummins K38 (38 L, 1,300–2,100 hp), K50 (50 L, 2,200–3,500 hp), and QSK60 (60 L, 3,500–4,000 hp) diesel engines in mining, marine, and power generation applications. Serving as the primary seal between the engine block and gear room cover, it ensures zero oil leakage under 20 bar (290 psi) pressure and temperatures up to 150°C, preventing engine damage from contamination or gear failure-potentially saving over $50,000 in repair costs. Constructed from multi-layer steel (MLS) with a graphite-impregnated nitrile rubber (NBR) coating, it withstands 1,000 hours of salt spray (ASTM B117) and 10 million pressure cycles, outlasting aftermarket gaskets by three times.

Triple-Layer Sealing System

- Base Layer: 0.3 mm MLS (SAE 1020) provides structural rigidity.

- Intermediate Layer: Graphite-impregnated NBR (50 Shore A) maintains 99.9% seal integrity from -40°C to 150°C.

- Surface Coating: PTFE film (0.05 mm thick) reduces friction to μ ≤0.08 during installation.

OE-Level Geometry

- Laser-Cut Perforations: 0.1 mm tolerance ensures perfect alignment with K38/K50/QSK60 engine blocks.

- Reinforced Bolt Holes: 3 mm chamfered edges resist 200 N·m torque without deformation.

Tested to Cummins' Extremes

- Leak Test: Helium leak rate <5×10⁻⁹ mbar·L/s (ISO 20488).

- Thermal Cycling: 1,000 cycles between -40°C and 150°C with 0% compression set.

Part Number : 3177160 (Rev. J, 2025 revision)

Compatibility : Cummins K38/K50/QSK60 engines

Operating Pressure : 15–20 bar (218–290 psi)

Thermal Range : -40°C to 150°C (-40°F to 302°F)

Material : Multi-layer steel (MLS) + NBR + PTFE

Dimensions : 800 mm × 600 mm × 1.2 mm

Weight : 0.8 kg (1.76 lbs)

Life Certification : 20,000-hour bench test (40,000 mining hours) – TÜV SÜD certified

Chemical Resistance : 1,000-hour immersion in SAE 15W-40 oil with 0% swelling

Critical Installation Steps:

1. Surface Preparation: Use Cummins cleaner P/N 4922477 to achieve a 0.8 μm Ra finish.

2. Torque Sequence: Tighten to 120 ±5 N·m (88 ft-lb) in a star pattern using Cummins torque wrench JH42879.

3. Seal Verification: Check for uniform contact pressure using blue assembly marking compound.

Maintenance Schedule:

- Every 2,000 Hours: Inspect visually for cracks or oil seepage.

- Every 5,000 Hours: Replace if compression set exceeds 20% (measured via thickness gauge).

*Pro Tip*: Pair with Cummins Gear Room Cover 4916778 for complete system protection.