Strengthen the bottom end of your BMW N55 engine with the ARP Head Stud Kit - BMW N55, delivering far greater clamping force and sealing than the factory fasteners. Engineered by ARP (Automotive Racing Products), this head stud kit is built to the standards demanded by high-performance and motorsport BMW builds.Key Features Designed for BMW N55 engine Significantly increased clamping force over OEM fasteners Improved head gasket sealing and cylinder head clamping Ideal for stroker, supercharged and turbocharged builds Re-usable — superior to single-use OEM torque-to-yield bolts Manufactured from premium, specially heat-treated materials Available in multiple configuration options to suit your build Supplied by ARP (Automotive Racing Products), trusted by BMW enthusiasts worldwide Product DetailsStrengthen the bottom end of your BMW N55 engine with the ARP Head Stud Kit - BMW N55, delivering far greater clamping force and sealing than the factory fasteners. Engineered by ARP (Automotive Racing Products), this head stud kit is built to the standards demanded by high-performance and motorsport BMW builds.Key Features Designed for BMW N55 engine Significantly increased clamping force over OEM fasteners Improved head gasket sealing and cylinder head clamping Ideal for stroker, supercharged and turbocharged builds Re-usable — superior to single-use OEM torque-to-yield bolts Manufactured from premium, specially heat-treated materials Available in multiple configuration options to suit your build Supplied by ARP (Automotive Racing Products), trusted by BMW enthusiasts worldwide Product DetailsThe ARP head stud kit for the BMW N55 replaces the factory cylinder head bolts with high-strength ARP studs/bolts that clamp the cylinder head to the block. Designed for the N55 single-turbo straight-six, this is a critical upgrade where forced induction places extreme stress on the head gasket, main caps and connecting rods. Standard torque-to-yield fasteners stretch permanently and lose clamping load over time — ARP hardware restores and increases that clamping force, helping prevent head gasket failure, cap walk and fastener fatigue.Available options for this engine: Multiple stud/bolt sizing options (Standard - (10) 11mm & (4) 9mm, High Boost - (14) 11 mm) to match your build Standard and High Boost configurations to suit your power target Supplied with ARP Ultra-Torque fastener assembly lubricant and torqued in stages to ARP’s specification. After initial assembly, complete a full heat cycle and re-torque the fasteners for a lasting, reliable seal.Configuration Options Standard - (10) 11mm & (4) 9mm High Boost - (14) 11 mm CompatibilityBMW N55 Models BMW E82 135i BMW E90 / F30 335i BMW F10 535i BMW F22 M235i BMW E70 / F15 X5 35i BMW F25 X4 35i Why Choose ARP (Automotive Racing Products)? Global leader in performance engine fasteners Premium materials with specialist heat treatment Manufactured in-house in the USA Trusted from street rebuilds to professional motorsport Why Buy from R44 Performance?R44 Performance supplies premium BMW performance and engine-building components trusted by enthusiasts worldwide. BMW specialists Genuine ARP (Automotive Racing Products) products Fast UK & worldwide shipping Expert product support Upgrade your BMW N55 build with the ARP Head Stud Kit - BMW N55 — available now from R44 Performance.Configuration Options Standard - (10) 11mm & (4) 9mm High Boost - (14) 11 mm CompatibilityBMW N55 Models BMW E82 135i BMW E90 / F30 335i BMW F10 535i BMW F22 M235i BMW E70 / F15 X5 35i BMW F25 X4 35i Why Choose ARP (Automotive Racing Products)? Global leader in performance engine fasteners Premium materials with specialist heat treatment Manufactured in-house in the USA Trusted from street rebuilds to professional motorsport Why Buy from R44 Performance?R44 Performance supplies premium BMW performance and engine-building components trusted by enthusiasts worldwide. BMW specialists Genuine ARP (Automotive Racing Products) products Fast UK & worldwide shipping Expert product support Upgrade your BMW N55 build with the ARP Head Stud Kit - BMW N55 — available now from R44 Performance.
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