Intake Valve 4995554 For Cummins Diesel 6B5.9 6BT5.9 6BTA5.9 6BTAA5.9 B3.9 Steel Engine Valve

Desc.

Valve

Part No

4995554

Brand Name

Cummins, Detroit, DCEC, CCEC, XCEC etc.

Other parts

pls contact freely if you need other P/N

Engine Type

Diesel engine, Gas engine, Diesel Generator,Marine engine, Construction engine, Pump engine etc.

Spare Type

Wearing spare parts, maintenance tools, repair kit, upper and lower engine gasket kit.

Condition

Original and brand new

Applicatble industriy

Retail, marine engines, Construction works, Energy & Mining etc

Key Word

Original spare parts and engine repair tool kits

Trade terms

FOB EXW CIF DDU DDP, Door to door is available in some countries.

Delivery time

Most parts are in stock,bulk order based on qty

Payment

T/T, L/C, D/A, Alipay, Western Union, Paypal etc.

Place of origin

China/USA/Japan/Austria/Mexico

Package

Neutral or original packaging

About the product

The valve components of Cummins B series diesel engines (such as 6B5.9, 6BT5.9, 6BTA5.9, 6BTAA5.9, B3.9, etc.) are key parts in maintenance.

1. Confirmation of Valve Model
Part Number 4995554: This is the standard part number for the intake valve of Cummins original equipment, applicable to B series engines (including naturally aspirated and turbocharged models).

Material: Steel, typically high-strength alloy steel, resistant to high temperatures and wear, suitable for the high compression ratio conditions of diesel engines.

2. Applicable Engine Model
6B5.9: Basic type, naturally aspirated, 5.9-liter displacement.

6BT5.9: Turbocharged version (for example, used in construction machinery and trucks).

6BTA5.9: Turbocharged + Intercooled (Higher Power Version).

6BTAA5.9: It may be a variant or upgraded version for a specific market (engine nameplate verification required).

B3.9: A 3.9-liter displacement compact version (some models may share the valve design, but compatibility needs to be confirmed).

3. Precautions for Valve Replacement
Pairwise Replacement: It is recommended to replace the intake and exhaust valves as well as the valve oil seals simultaneously to ensure sealing performance.

Grinding and clearance:

The new valves need to be ground and matched with the valve seats to ensure airtightness.

Check the wear of the valve guide. Replace it if it is excessively worn.

Adjust the valve clearance to the standard value (in cold engine state): intake valve approximately 0.25mm, exhaust valve approximately 0.50mm (for specific details, refer to the maintenance manual).

Lubrication: Apply an appropriate amount of engine oil during installation to avoid dry friction.

4. Troubleshooting Common Issues
Valve erosion: This may be caused by poor fuel quality, faulty fuel injectors, or inadequate cooling.

Valve breakage: It is necessary to check the tension of the valve spring and whether the timing is correct.

When there is air leakage, indicated by low compression pressure and black smoke, the valves need to be reground or replaced.

5. Suggested Alternatives
Original Part: It is recommended to use Cummins original valve (4995554) to ensure the matching of size and material.

High-quality aftermarket parts: such as TRUCKTEC, FEBI and other brands, but compatibility needs to be verified.

Avoid inferior parts: Inferior valves are prone to early wear and breakage, which can cause serious engine malfunctions.