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Spare Parts Range for W11 and L09

W11 and L09 are among the most widely used drilling pumps globally, which is why we maintain a large inventory of spare parts for their maintenance and repair.

Original and OEM Spare Parts

We supply bimetallic and zirconia liners, ball and disc valves, XNBR and Kevlar pistons, as well as other critical components required for fast and reliable repairs.

Order Placement and Invoice

You can place orders via our website using the convenient shopping cart, or by sending a request to our email. Once all items are confirmed, we will send you an invoice. If the parts are in stock at our warehouse in Germany, we can dispatch them to you without delay.

Popular Boart Longyear diamond core drilling rigs — LF90, LF-70, and LM-75 — are equipped with W11 and L09 mud pumps, known for their simplicity and durability.


Locking nut for Boart Longyear L09,W11 (75012)
Ensures tight sealing of components under vibration and pressure, Hex nut is a robust fastening element commonly used in mud pump ..
Liner Seal for Boart Longyear W11 (79322)
Seal provides a tight seal and prevents leakage of working fluids in the pump. Seals play a key role in maintaining pressure, prot..
Drive Shaft Bearing for Boart Longyear L09 (19720)
Ideal for industrial-grade drilling systems, bearings help support pump shafts and minimize friction under extreme loads.Key advan..
Drive shaft oil seal for Boart Longyear W11 (3670327)
Used in critical sealing applications, oil seals play a key role in preventing lubricant leaks and protecting internal components ..
Crankshaft bearing holder for Boart Longyear L09 (3715737600)
Used in high-load drilling pumps, the bearing holder maintains bearing stability and provides structural support to prevent misali..
Crankshaft bearing holder for Boart Longyear L09 (79219)
The bearing holder secures the bearing in its designated position inside the mud pump, ensuring alignment and minimizing vibration..
Liner gasket (copper) for Boart Longyear W11 (75070)
75070 liner gasket (copper)..
Pump stem oil seal for Boart Longyear W11 (79321)
Designed to prevent lubricant leakage, oil seals play a key role in preventing lubricant leaks and protecting internal components ..
Plate mounting screw for Boart Longyear W11 (16634)
Screw (screw/bolt) provides strong fixation, resistance to vibration and stable operation under heavy loads. Key advantages: Made..
Suction plug for Boart Longyear L09 (18475)
Used for reliable closure of drain, suction, or inspection ports in drilling pump assemblies. Key advantages: Protects internal s..
Liner cover seal for Boart Longyear L09 (75068)
Seal provides a tight seal and prevents leakage of working fluids in the pump. Seals play a key role in maintaining pressure, prot..
Mud Pump Stem FMC L09 for Boart Longyear L09 (79087)
79087 Mud Pump Stem FMC L09..
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Boart Longyear (W11, L09) | Page 3