WESPC Diesel Engine 9323A270G 9323A272G Fuel Injection Pump For Perkins

WESPC Diesel Engine 9323A270G 9323A272G Fuel Injection Pump For Perkins

Application:

The 9323A270G and 9323A272G pumps are calibrated for Perkins 1103 and 1104 mechanical-injection engines used in compact tractors, telehandlers, mini-excavators and mobile welder/generator packages. Typical fitments include the Massey Ferguson 3300-series and 4300-series tractors, Landini Rex 4-100 / Rex 4-110 utility tractors, JCB TM310 and TM320 articulated loaders, and Pramac GSW45P diesel generator sets. All listed engines are 3.3 L or 4.4 L three- and four-cylinder naturally aspirated or turbocharged units rated from 55 kW to 85 kW at 2 200–2 600 r/min.

Technical specifications:

The pump body is a single-piece cast-iron housing with integral camshaft bore Ø35 mm and three-point mounting flange to SAE J744 size 2. Plunger diameter is 10 mm, maximum stroke 9 mm, delivering peak injection pressures up to 1 400 bar. The internal vane-type feed pump supplies 120 L/h at 400 kPa; the automatic advance mechanism provides 4° of crank-angle advance from 1 000 to 2 400 r/min. Drive coupling is 12 mm wide Woodruff key with 110 mm PCD four-bolt pattern. Seals are FKM (Viton) compatible with biodiesel blends up to B20.

Material & performance features:

Plunger and barrel assemblies are machined from case-hardened 20MnCr5 alloy steel, super-finished to 0.3 µm Ra for minimal friction and leakage. Camshaft lobes are induction-hardened to 58–62 HRC, while roller tappets receive a DLC coating to reduce scuffing under high transient torque. The distributor head is cast from high-tensile aluminium alloy with bronze wear sleeves for cavitation resistance. A glass-fibre-reinforced nylon governor cover resists impact and moisture ingress to IP65. Lightweight aluminium die-cast control sleeve ensures rapid idle-speed recovery and smooth torque rise across the operating range.

Interchange part numbers:

PERKINS 9323A270G, 9323A272G, 9323A271G, 9323A273G; MASSEY FERGUSON 4222006M91, 4222007M91; LANDINI 747735M91, 747736M91; JCB 331/20002, 331/20003; PRAMAC 6000-45012, 10000-45012; reference equivalent to 1-12320-630-0 and 04279-0L020 assemblies.

WESPC(Dongguan)Tech Co., Ltd. is a wholly-owned subsidiary of WESPC Hong Kong.

The company has long been deeply engaged in the Perkins aftermarket spare parts sector, while also covering a wide range of multi-brand engines and related components. With years of professional expertise and a solid reputation, WESPC provides customers with diverse, one-stop solutions tailored to their needs.

Leveraging the global vision of its Hong Kong headquarters and the strategic location advantages of Dongguan, WESPC Dongguan is committed to building a highly efficient and reliable supply chain system, supported by professional technical expertise and comprehensive after-sales services, to continuously create greater value for its customers.

Looking ahead, the company will continue to expand its business landscape, keep pace with industry trends, and consistently enhance product and service quality—working hand in hand with global partners to achieve mutual growth and success.