CAT C13 Injector — BEFRAG C13-3442B Nozzle (Professional Product Detail)

When a single nozzle can change combustion quality across an entire engine, replacement choices matter. The BEFRAG C13-3442B series nozzle is an aftermarket solution engineered to restore the spray geometry and flow characteristics required by Caterpillar C13 engines - offering a practical balance between availability and workshop-grade performance for repair shops, remanufacturers and fleet depots.

 

The BEFRAG C13 nozzle family (often stocked under cross-reference codes such as 200H803444 / 133D803444 / 200T803444) is machined to tight orifice tolerances and hardened for erosion resistance. Each nozzle is designed to reproduce the spray cone and droplet size that the C13 injector system expects, helping to restore cold-start behaviour, reduce visible smoke and improve combustion stability when fitted correctly.

 

 

This nozzle suits a range of Caterpillar C13 engine variants used in heavy equipment - excavators, wheel loaders and large on-highway trucks. Suppliers commonly list compatibility with OEM injector part numbers such as 249-0712 / 249-0713 / 249-0705, so always confirm fitment using the injector tag and engine serial before ordering.

 

 

Precision orifice machining: Multi-hole / slot geometries produced to repeatable tolerances for consistent flow rates and spray symmetry. 

Wear-resistant steel: Hardened nozzle steel resists cavitation and erosion under high-pressure common-rail or electronic injector cycles. 

Direct-fit design: Supplied as drop-in replacements for many C13 injector cores - available in single-piece packs or multi-packs for reman operations. 

Workshop-ready packaging: Many distributors ship quickly (3–7 days typical) and provide basic QC photos or batch markings on request.

 

 

Improved spray pattern recovery - restores atomization lost to nozzle wear, improving combustion efficiency and reducing particulate output. 

Cost-effective turnaround - replacing the nozzle can return an injector to serviceability faster and cheaper than full injector exchange when the core is otherwise sound.

Reduced downtime risk - widely available aftermarket stocks like BEFRAG help reman centers and depots manage AOG situations with shorter lead times.

 

 

Inspect the core: Check nozzle-seat condition, needle tip and holder bore for scoring - an ideal nozzle fitted on a damaged seat will not seal correctly.

Clean assembly: Use particle-controlled benches and fresh seals (copper washers / O-rings). Contamination introduced at reassembly causes immediate performance loss.

Bench-validate: Always verify spray pattern, flow rate and return flow on a calibrated injector bench after nozzle replacement. Attach flow-sheets to the serviced injector for traceability and warranty.

 

 

Hard starting, especially in cold conditions.

Increased black smoke under acceleration or idling.

Elevated injector return flow (cc/min) on bench testing.

Asymmetrical spray pattern or visible tip erosion on inspection.
If multiple symptoms appear and the injector core passes dimensional checks, a nozzle replacement is often the correct, economical corrective action.

 

 

The BEFRAG C13-3442B nozzle is a pragmatic aftermarket option for Caterpillar C13 injector servicing - offering machinist-grade orifice control, hardened materials and fast availability that help workshops return engines to efficient, low-emission operation. Always confirm fitment with injector tags, perform bench validation post-fit, and source from traceable suppliers to ensure consistent results.

 

 

To make your purchasing experience smooth and easy, we offer a variety of secure payment options:

We're here to make your order process worry-free - choose the payment method that works best for you!

 

 

Hot Tags: cat c13 injector — befrag c13-3442b nozzle (professional product detail), China cat c13 injector — befrag c13-3442b nozzle (professional product detail) manufacturers, suppliers, factory, 0R-8786, 188-1320, 222-5966, 3126-4752, 4954646 1764365 SCANIA, 4954647