J 903940 Bolt – Cylinder Head (180mm) – DCEC Original Cummins Hex Flange M12 x 1.75 x 180mm for CASE 580 E, Super E, K & Super K 4T-390 / 4-390 Engine
The J 903940 Cylinder Head Bolt (180mm) – DCEC Original Cummins is a genuine-spec Hex Flange Bolt M12 x 1.75 x 180mm designed for the cylinder head and valve mechanism of CASE machines equipped with the 4-390 and 4T-390 diesel engines. Manufactured under Cummins standards, this bolt ensures maximum clamping force, precise thread engagement, and long-term reliability.
It is fully compatible with CASE 580 E, Super E, K, and Super K, making it the ideal replacement during cylinder head installation, gasket replacement, head tightening, or complete engine overhaul.
DCEC Original Cummins cylinder head bolt
Hex Flange size M12 x 1.75 x 180mm
Designed specifically for 4T-390 / 4-390 diesel engines
Provides strong and even clamping force
High-precision threads prevent loosening under vibration
Durable under heat, pressure, and engine load
Ensures proper sealing and stable compression
Direct-fit replacement for CASE OEM bolts
A reliable OEM-standard choice for workshops and owners who require genuine Cummins quality.
J 903940 Cylinder Head Bolt (180mm) – DCEC Original Cummins ialah bolt flange hex M12 x 1.75 x 180mm yang direka untuk cylinder head dan valve mechanism bagi enjin 4-390 dan 4T-390.
Dibuat mengikut standard Cummins, bolt ini memberikan cengkaman kuat, thread tepat, dan ketahanan jangka panjang.
Bolt asli DCEC Original Cummins
Saiz M12 x 1.75 x 180mm
Sesuai untuk enjin 4T-390 / 4-390
Cengkaman kuat & tidak mudah longgar
Tahan haba, tekanan dan getaran enjin
Menjaga sealing dan compression cylinder head
Pengganti terus untuk bolt asal CASE
Pilihan terbaik untuk overhaul enjin, tukar gasket & servis cylinder head.
J 903940 气缸盖螺栓 (180mm) – DCEC 原装康明斯,采用 M12 x 1.75 x 180mm 六角法兰结构,专为 4-390 / 4T-390 柴油引擎的气缸盖与气门机构固定而设计。符合康明斯原厂标准,提供 强劲夹紧力、精准螺纹啮合与长期耐用性。
适用于 CASE 580 E、Super E、K、Super K。
DCEC 原装康明斯气缸盖螺栓
规格 M12 x 1.75 x 180mm
适用于 4-390 / 4T-390 柴油发动机
强力夹紧,确保气缸盖密封稳定
精密螺纹,抗震不松动
耐高温、耐压力、寿命长
可直接替换 CASE 原厂螺栓
是引擎 大修、换垫片、气缸盖安装 时必备的原装高品质部件。
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