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Poland
HYDRO CZĘŚCI JAKUBIEC SPÓŁKA JAWNA
Kapitałowa 4
35-213 Rzeszów
Call us:
+48 17 229 37 05
NIP: 8133391713

Valve Covers and Engine Breathers – Perkins, JCB, CAT

Engine tightness and ventilation. We offer valve covers (composite and metal), engine breathers, oil filler caps, and gaskets from Perkins (OEM), KMP Brand, and Azeri Parts.

Parts for engines: Perkins (1000, 1100, 400 series), JCB Dieselmax (444/Ecomax), CAT (3054/C4.4), and Isuzu.

Perkins OEM
Engine Breathers
KMP & Azeri Parts
⚠️ Plastic or Metal? Perkins valve covers differ in material and breather hole layout. Send us a photo of your cover – we will find the perfect match.
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ROCKER COVER

Valve Covers – The Cracking Issue

In modern engines (Perkins 1104, JCB Dieselmax), valve covers are made of composite plastic. Over time, heat hardens this material, causing it to crack when tightened or warp, leading to oil leaks. We offer new, complete Perkins OEM covers and high-quality replacements that solve this problem.

Engine Breather – Why is it important?

The breather separates oil from blow-by gases. A clogged breather causes pressure build-up in the engine, forcing oil out through crankshaft seals and the dipstick. We recommend replacing the breather preventatively during engine rebuilds.

💡 Replacing the cover gasket?

If you are removing the cover, it's worth checking valve clearances and the top end. Also check:

Frequently Asked Questions (FAQ)

Is the gasket included with the cover?

It depends on the product. Original Perkins plastic covers often have the gasket pre-glued. Metal covers or replacements may require buying the gasket separately. Check the product description or ask us.

I lost the oil cap, are they universal?

No. Caps differ in thread (diameter and pitch) or locking mechanism (half-turn). We stock dedicated caps for Perkins, JCB, and CAT engines.

Oil leaking down the engine?

Often the culprit is not the head gasket, but a hardened valve cover gasket or a cracked breather housing. Send a photo of the leak – we will help diagnose the problem.

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