A-R502511-AI Bolt, Head
A-R502511-AI Bolt, Head
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One New Aftermarket Replacement Cylinder Head Bolt for John Deere PowerTech Engines
This flanged cylinder head bolt is a critical engine fastener used in John Deere 300 Series PowerTech diesel engines. It secures the cylinder head to the engine block and must be torqued to specification during engine assembly or rebuild. Grade 8 strength and flanged head design match original equipment requirements for the 3029, 4039, 4045, 6059, and 6068 engine families used across a wide range of John Deere (JD) tractors and combines.
Specifications
- Diameter: 0.500 in.
- Grade: 8
- Length: 5.394 in. (approx. 5.43 in.)
- Thread: 0.500 in. UNC 2A
- Thread Length: 1.969 in.
- Head Style: Flanged
- Quantity Note: 4-cylinder engines use 18 bolts; 6-cylinder engines use 26 bolts
Compatible Models
John Deere PowerTech Engine Applications - 3029, 4039, 4045, 6059, 6068 / 6068H Series:
Tractors: 5045E, 5055D, 5055E, 5060E, 5065E, 5075E, 5075M, 5080R, 5080RN, 6430, 7130 Premium, 7220, 7230, 7230 Premium, 7320, 7330, 7330 Premium
Combines: 9400, 9410, 9450, 9550, 9550SH, 9560, 9560SH, 9560STS, 9570STS
Replaces Part Number(s):
R502511, R534091, 751356
Aftermarket Interchange Numbers
A-R502511-AI, NR502511, R502511-RP
New aftermarket replacement part - not remanufactured, not used.
