Product Overview

The DLLA158PN312 Diesel Injector Nozzle Tip (OEM 105017-3120) is a premium replacement component engineered for high-pressure common rail and conventional diesel fuel injection systems used in excavators, construction machinery, and heavy-duty industrial engines. Manufactured to exact OEM tolerances, this nozzle tip ensures precise fuel atomization, optimal combustion efficiency, and reduced emissions across a wide range of diesel engine applications.

We supply this injector nozzle to diesel repair workshops, fleet maintenance operations, and parts distributors across North America, Europe, the Middle East, Southeast Asia, Africa, and South America. With established logistics partnerships and export expertise, we deliver reliable parts to major industrial hubs and port cities worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications for DLLA158PN312 and 105017-3120, ensuring perfect fit and function.
• Superior Atomization: Optimized spray pattern and hole geometry deliver consistent fuel delivery for improved combustion and fuel economy.
• High-Strength Materials: Constructed from hardened alloy steel with advanced heat treatment for resistance to wear, corrosion, and thermal fatigue.
• Extended Service Life: Rigorous quality control and precision grinding extend nozzle lifespan, reducing downtime and replacement costs.
• Emissions Compliance: Supports cleaner combustion, helping engines meet stringent emission standards.
• Cost-Effective Alternative: OEM-quality performance at a competitive aftermarket price point.

Technical Specifications

OEM Cross-Reference

This injector nozzle is compatible with the following OEM and alternative part numbers:

• DLLA158PN312 — Primary Part Number
• 105017-3120 — OEM Reference Number
• DLLA 158 PN 312 — Alternative Format
• 1050173120 — Compact OEM Format

Cross-reference numbers are provided for identification purposes. Always verify fitment against your engine’s original specifications before ordering.

Compatibility

This nozzle tip is designed for diesel fuel injectors used in a variety of heavy-duty and industrial engine applications, including:

• Excavators and construction equipment
• Industrial diesel engines
• Agricultural machinery
• Marine diesel engines
• Generator sets and power units

Note: Compatibility depends on the specific injector assembly and engine model. Please confirm your existing part number matches DLLA158PN312 or 105017-3120 before purchase. Contact our technical team for fitment assistance.

Global Supply & Distribution

• Worldwide Shipping: We ship to over 80 countries via express courier (DHL, FedEx, UPS) and sea/air freight for bulk orders.
• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Spain), Asia-Pacific (Australia, Indonesia, India, Philippines), Middle East (UAE, Saudi Arabia, Turkey), Africa (South Africa, Nigeria, Kenya), and South America (Brazil, Chile, Colombia).
• Fast Delivery: Express delivery to major ports and industrial centers within 3–7 business days. Bulk orders shipped via sea freight with competitive rates.
• Export Compliance: All shipments comply with international trade regulations and customs documentation requirements. We provide commercial invoices, packing lists, and certificates of origin as needed.
• Packaging: Each nozzle is individually wrapped and securely packed to prevent damage during transit.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001-certified facilities using CNC precision machining and automated inspection systems.
• Testing Procedures: Each batch undergoes flow testing, spray pattern verification, and pressure resistance checks to ensure consistent performance.
• Warranty: 6-month warranty against manufacturing defects. Warranty covers replacement or refund for verified quality issues.
• Quality Control: Multi-stage QC process including raw material inspection, in-process checks, and final pre-shipment inspection.

FAQ

Q1: How do I verify that this nozzle fits my engine?
A: Check your existing injector nozzle for the part number DLLA158PN312 or 105017-3120. You can also cross-reference your engine model and injector assembly number with our compatibility list. If unsure, contact our technical support with your engine serial number and photos of the old nozzle for confirmation.

Q2: What is the recommended installation procedure for this injector nozzle?
A: Installation should be performed by a qualified diesel mechanic. Clean the injector body and nozzle seat thoroughly, use new copper washers and O-rings, and torque to manufacturer specifications. Always replace nozzles in complete sets for balanced fuel delivery. Proper calibration on a test bench is recommended after installation.

Q3: How often should diesel injector nozzles be replaced?
A: Replacement intervals vary by engine type, fuel quality, and operating conditions. Typically, nozzles should be inspected every 2,000–3,000 hours and replaced when spray pattern deterioration, increased fuel consumption, rough idling, or excessive smoke is observed. Using clean, high-quality diesel fuel and regular filter changes extends nozzle life.