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TG-A0021644 Fuel Injector 557-7637 5577637 CA5577637 for Caterpillar C9 Engine | Common Rail Diesel Injector Replacement

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PRODUCT DETAILS

TG-A0021644 Fuel Injector 557-7637 5577637 CA5577637 for Caterpillar C9 Engine | Common Rail Diesel Injector Replacement

OEM / Compatible Part Numbers

557-7637
5577637
CA5577637
T431454R

Product Description

The TG-A0021644 Fuel Injector is a replacement common rail diesel injector designed for Caterpillar C9 engines. Part number 557-7637 is officially identified by Caterpillar as an Injector Group, while aftermarket parts catalogs identify 557-7637, 5577637 and CA5577637 as replacement numbers for C9 engine applications. The injector is designed to deliver fuel at the required pressure and timing, supporting accurate fuel metering, efficient combustion, reliable engine starting and stable diesel engine performance. For equipment such as D300GC, D250GC, XQP300 generator sets and D6R/D6T tractor configurations, the exact machine serial number and injector configuration should be checked before installation because Caterpillar's current catalog does not list compatibility for 557-7637 itself.

Product Specifications

Specification	Details
Product Type	Common Rail Diesel Fuel Injector
SKU	TG-A0021644
Main OEM Part Number	557-7637
Cross-Reference	5577637 / CA5577637
Additional Reference	T431454R
Manufacturer	Caterpillar / CAT
Compatible Engine	C9
Fuel System	Common Rail
Fuel Type	Diesel
Application	Heavy-Duty / Industrial Equipment
Quantity	1 Piece
Condition	Replacement Part
Weight	Approx. 1.6 kg (1600 g)
Weight Status	Estimated

PRODUCT HIGHLIGHTS

Product Highlights

Feature	Description	Benefit
OEM Cross-Reference	557-7637 / 5577637 / CA5577637	Simplifies part identification
Common Rail Design	Designed for high-pressure diesel fuel injection	Supports precise fuel delivery
C9 Application	Replacement injector for CAT C9 engines	Supports reliable engine operation

SHIPPING

Item Details

Processing Time Orders are processed within 1-3 business days after payment confirmation

Shipping Methods DHL/UPS/ FedEx/ TNT/ Air Freight/ Sea Freight

Estimated Delivery Time Express shipping: 3-7 business days, depending on destination

Packaging Export-standard cartons with protective inner packing

Tracking Tracking number will be provided once the order is shipped

Shipping Cost Calculated based on weight, dimensions, and destination

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WARRANTY POLICY

All new aftermarket parts come with a 1-Year warranty. Quality is the first thing we consider. Check out our Warranty Assistance for more details.

SHIPPING POLICY

We offer express and standard shipping options to ensure your off-road machine gets back in action—fast and reliably. For more details, please visit our Shipping Policy .

EASY RETURN POLICY

We prioritize your satisfaction. If your order doesn't meet your expectations within 90 days, you may be eligible for a refund. See our Easy Return Policy for details.

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