Import Auto Fuel Nozzle Dlla154pn185 — Buy in wholesale FOB from Supplier in China

The DLLA154PN185 is a P-type diesel fuel injector nozzle manufactured for direct-injection diesel engines, with the 154 designation indicating a 154-degree spray angle and PN denoting the pintle nozzle series. China-Lutong Parts Plant produces this component with a body diameter of 17 mm and an overall length of 71.5 mm, matching standard Bosch injector dimensions for seamless retrofit. The nozzle operates at typical opening pressures of 180-220 bar, with a calibrated spray hole diameter of 0.185 mm enabling precise atomisation for optimised combustion. Its hardened alloy steel construction withstands peak combustion pressures exceeding 160 bar and cyclic thermal loading across operating temperatures from -40°C to 150°C.

Material specification follows standard diesel nozzle practice: the nozzle body uses vacuum-remelted chromium-molybdenum alloy steel with a minimum hardness of 62 HRC at the needle seat, while the needle itself is lapped to a surface finish of Ra 0.1 μm for leak-free sealing. The pintle tip geometry produces a specific spray pattern with 4-5% atomised fuel distribution, critical for reducing particulate emissions in Euro III and IV compliant engines. Heat treatment includes triple tempering after austenitising to minimise residual stress and prevent fatigue cracking. Standard replacement intervals for this nozzle type in commercial vehicle applications range from 120,000 to 200,000 km depending on fuel quality and filtration efficiency.

Typical applications span light and medium-duty diesel engines in passenger vehicles, commercial vans, and compact agricultural machinery using pump-line-nozzle or distributor injection systems. Buyers include independent diesel workshops, engine rebuilders, and aftermarket parts distributors serving markets where injector refurbishment remains cost-effective versus full replacement. For trade terms, confirm whether China-Lutong Parts Plant supplies nozzles as bare nozzles only, or matched with setting dimensions and shim packs for direct installation. The PN185 variant specifically suits Mitsubishi 4D56 and related engine families; verify engine code compatibility before ordering, as minor nozzle index variations affect spray penetration and combustion chamber matching.

China-Lutong Parts Plant operates from Dufeng Industrial Road in Hanjiang District, Putian, Fujian Province, with postal code 351111. The supplier carries an imported tier classification and harbour trust level on the marketplace, with a response rate currently showing 0.00 and no recorded average response hours. This profile indicates limited active engagement data is available through the platform, so direct communication channels should be tested before relying on platform messaging alone for time-sensitive procurement.

The listing presents the DLLA154PN185 as a precision component for diesel fuel injection systems, emphasising compatibility and durability for automotive applications. No verified certifications, production capacity figures, or factory audit details are stated in the available profile. Buyers should independently confirm ISO 9001 or IATF 16949 quality system coverage, request material certificates with chemical composition and hardness test results, and verify whether China-Lutong manufactures nozzles in-house or sources from a designated production partner. The address places the company within Putian's industrial corridor, a region with established auto parts manufacturing activity, though this geographical concentration does not alone guarantee production capability.