Engine parts guides
Short, practical answers from the Agroparts engine specialists. The same rules we apply when we confirm a part by engine number or OEM code.
Wet vs dry cylinder liners: the difference explained
Wet liners touch engine coolant and seal with rings; dry liners press into the block bore. How to tell them apart and when to rebore or reline.
Read the guide →STD, +0.25, +0.50: reconditioning sizes explained
STD is the original size. Oversize pistons follow a rebored cylinder, undersize bearings a reground crankshaft. Plain guide to +0.25 and +0.50 sizes.
Read the guide →OEM cross-reference: find a part by any number stamped on it
An OEM cross-reference maps every manufacturer number for the same part to one replacement. How to use it, plus a finder with 13,538 OEM codes.
Read the guide →OEM vs Genuine vs OE-Quality vs Aftermarket vs Pattern Engine Parts: What the Terms Mean and How to Choose
OEM, genuine, OE-quality, aftermarket, and pattern engine parts explained: what each term means, the real trade-offs, and how to choose.
Read the guide →Signs Your Diesel Engine Needs a Rebuild (and When a Repair Is Enough)
Blue smoke, oil use, low power, knocking? See which diesel symptoms mean a rebuild vs a repair, and how a workshop confirms it before you buy.
Read the guide →Engine Gasket Sets: Head Set vs Full Set vs Bottom Set
Head set vs full set vs bottom set: what each diesel gasket set contains, why head bolts are separate, and when to order which so you get it right first time.
Read the guide →Head Gasket Failure: Symptoms, Causes, and What to Replace
Coolant loss, white smoke, overheating? Head gasket failure symptoms, causes, and what a proper diesel repair replaces.
Read the guide →How to Find Your Engine Number (and Why It Is the Key to the Right Part)
Find your engine number, read it right, and send it to Agroparts. Our specialists cross-reference the exact diesel part before you order.
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