J 903857 Crankshaft Pulley Bolt – US Specification Hex Bolt M12 x 1.25 x 36mm for CASE 580 E, Super E, K, Super K, L, Super L & M 6-590 / 6T-590 Engine
The J 903857 Crankshaft Pulley Bolt – US Specification is a precision-engineered Hex Bolt M12 x 1.25 x 36mm designed for securing the crankshaft pulley on CASE backhoes equipped with the 6-590 and 6T-590 diesel engines. Built to US bolt standards, this bolt ensures a strong, stable, and vibration-resistant fit to maintain proper engine timing and belt alignment.
Compatible with CASE 580 E, Super E, K, Super K, L, Super L, and M, this crankshaft bolt is essential during pulley replacement, engine overhaul, and front-end servicing.
US-spec Hex Bolt M12 x 1.25 x 36mm
Designed for crankshaft pulley fastening
Perfect fit for 6-590 & 6T-590 diesel engines
High-strength build, resistant to vibration and loosening
Ensures stable pulley rotation & correct belt alignment
Direct replacement for CASE original bolt
Ideal for engine rebuilds, timing adjustment & pulley servicing
A dependable hardware choice for maintaining engine reliability, stability, and long service life.
J 903857 Bolt Crankshaft Pulley – US Specification ialah bolt hex M12 x 1.25 x 36mm yang direka untuk mengikat crankshaft pulley bagi enjin 6-590 dan 6T-590. Mengikut spesifikasi US, bolt ini memberikan kekuatan cengkaman yang stabil serta tahan getaran.
Serasi untuk CASE 580 E, Super E, K, Super K, L, Super L dan M.
Bolt Hex US Spec M12 x 1.25 x 36mm
Untuk mengikat crankshaft pulley
Sesuai untuk enjin 6-590 / 6T-590
Tahan getaran & tidak mudah longgar
Menjamin putaran pulley yang stabil dan alignment tali sawat yang betul
Pengganti direct-fit untuk bolt original CASE
Sesuai untuk overhaul, servis timing & tukar pulley
Pilihan terbaik untuk memastikan prestasi enjin kekal stabil dan tahan lama.
J 903857 曲轴皮带轮螺栓 – 美国规格(US Specification),采用 M12 x 1.25 x 36mm 六角螺栓,专为固定 曲轴皮带轮(Crankshaft Pulley) 而设计。适用于 CASE 使用的 6-590 与 6T-590 柴油引擎,确保皮带轮牢固稳定、对位精准,不会在震动中松脱。
适用型号包括 CASE 580 E、Super E、K、Super K、L、Super L、M。
美国规格六角螺栓 M12 x 1.25 x 36mm
专用于固定 曲轴皮带轮
完美匹配 6-590 / 6T-590 引擎
抗震动、不松动、耐用度高
保证皮带轮稳定旋转与皮带正确对位
可直接替换 CASE 原厂螺栓
适用于引擎翻修、前端维修、皮带轮更换
是维持 发动机稳定运转与长期可靠性 的关键部件。
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