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BOSCH NOZZLE DLLA 153P 2558 DLLA153P2558

BOSCH NOZZLE DLLA 153P 2558 DLLA153P2558

1.Model number：DLLA153P2558
2. warranty：6 months
3.material : Iron
4.condition : new，LIWEI
5.origin : China

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Product Introduction

Quality：Bosch original/ Liwei/Xingma/china new

Replacement Compatibility:

Replaceable old model: DLLA153P2468

Upgrade model: DLLA153P2658 (requires recalibration)

Type: Common rail injector nozzle

Engine:VW 1.9TDI

Bosch Nozzle DLLA153P2558

1. Basic Technical Parameters

Model Breakdown:

DLLA: Diesel Long Pintle Nozzle

153: Spray cone angle 153±2°

P2558: Bosch internal process code

2.Critical Dimensions:

Total length: 45.2±0.1mm

Thread specification: M12×1.5-6H

Sealing cone angle: 60°

Needle valve lift: 0.05±0.01mm

3.Performance Parameters:

Standard opening pressure: 200±10bar

Flow characteristics: 420±15cc/30s at 200bar (new unit)

Operating temperature range: -30℃ to +250℃

Compatibility Specifications

OEM Matching:

Injector body model: Bosch 0445120453

Compatible engines:

VW 1.9TDI (PD engines, codes ARL/ASZ)

Audi AVF/ASZ engines

Structural Characteristics

Core Components:

Needle valve material: W6Mo5Cr4V2 high-speed steel

Valve body material: 18CrNi8 alloy steel

Surface treatment: Nitriding (hardness ≥800HV)

Spray Characteristics:

Spray cone angle: 153±2°

With the similar angle: nozzle DLLA148P2608 for 0445120483, nozzle DLLA150P2604 for 0445120476

Droplet size distribution: ≥85% within 20-50μm range

Spray penetration distance: 85±5mm (tested at 100bar)

Quality Control Standards

Factory Testing Items:

Leakage test: ≤2 drops/minute at 220bar for 1 minute

Spray uniformity: ≤3% flow deviation across 5 test points

Endurance test: ≤5% flow reduction after 500,000 cycles

Critical Tolerances:

Needle guide clearance: 0.002-0.004mm

Sealing cone roundness: ≤0.001mm

Installation Specifications

Torque Requirements:

Nozzle installation torque: 65±5Nm

Clamp bolt torque: 25±3Nm

Calibration Parameters:

Shim specifications:

Thickness range: 0.10-0.50mm (0.05mm increments)

Every 0.10mm increase ≈ 8-10bar pressure increase

Fault Diagnosis Parameters

Wear Limits:

Replace if opening pressure <180bar

Replace if flow deviation >10%

Replace if spray non-uniformity >15%

Typical Failure Data:

Needle wear >0.003mm causes dripping

Spring force reduction >8% requires replacement

Special Tool Requirements

Special Tools:

Nozzle removal tool: Bosch 0986464003

Pressure tester: Bosch FTV500

Spray pattern tester: Bosch SPT300

Testing Equipment Accuracy:

Pressure gauge: ±1bar

Flow meter: ±0.5%

Technical Upgrade Recommendations

Performance Enhancement Options:

High-precision ground version (HP): ≤1.5% flow variation

DLC-coated version: 30% lifespan improvement

Modification Notes:

Maximum allowable pressure: 250bar (short-term)

Biodiesel compatibility: 40% shorter maintenance interval for B20 blends

FOR

Nozzle Model	FOR	Car models
DLLA153P2558	0445120453	XICHAI 锡柴
DLLA150P2569	0445120460	YAMZ
DLLA150P2574	0445120463	SANY三一
DLLA155P2587	0445110850 /0445110852	JAC 江淮
DLLA156P2588	0445110845	jiangxi-isuzu 庆铃
DLLA154P2600	0445110865 / 0445110866	JMC 江铃
DLLA151P2601	0445110867	FOTON 福田
DLLA152P2603	0445120481	DONGFENG 东风
DLLA150P2604	0445120476	JAC 江淮重卡,国六
DLLA148P2608	0445120483	CNHTC重汽