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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.


Connecting Rod for Boart Longyear W11 (75077)
Used in high-pressure fluid systems, this connecting rod assembly ensures smooth power transmission from the crankshaft to the pis..
Drive shaft for Boart Longyear W11 (79116)
Engineered for high-load environments, this component enhances the reliability and performance of the transmission system. Transfe..
Valve Seat FMC for Boart Longyear W11 (79324)
Used in high-pressure drilling systems, this valve seat supports sealing integrity in demanding mud pump environments. The valve s..
Valve seat for Boart Longyear L09 (79614)
Designed to withstand abrasive environments, this valve seat supports sealing integrity in demanding mud pump environments. The va..
Piston rod oil seal holder for Boart Longyear L09 (79332)
Essential for fluid retention in drilling systems, oil seals play a key role in preventing lubricant leaks and protecting internal..
Pump crankshaft inserts (pair) for Boart Longyear W11 (75033)
75033 Pump crankshaft inserts (pair) W11..
Connecting rod assembly for Boart Longyear L09 (78538)
Used in high-pressure fluid systems, this connecting rod assembly ensures smooth power transmission from the crankshaft to the pis..
Mud Pump Stem Assembly for Boart Longyear W11 (75072)
75072 Mud Pump Stem Assembly W11..
Piston Holder for Boart Longyear W11 (75037)
75037 Pump Piston Holder W11..
Valve Ball for Boart Longyear W11 (26157)
26157 W11 Pump Valve Ball..
Disc valve assembly for Boart Longyear L09 (21836)
Disc valve assembly for Boart Longyear L09 (21836)..
Crankshaft Bearing for Boart Longyear L09 (79218)
Built for high-load applications, bearings help support pump shafts and minimize friction under extreme loads.Key advantages:High ..
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Boart Longyear (W11, L09) | Page 2