Camshafts & Followers

Here at Engine Parts (UK) LTD we stock a massive range of hydraulic lifters, cam buckets, cam followers, rocker arms & camshafts between our three distributions hubs in the UK. We keep OEM parts as well as aftermarket products from AE, Freccia & Ajusa. We can source INA, Febi Bilstein, Estas, Kent Cams and other brands as a special request.

camshafts & followers


Camshafts are used to set the timing of the valve train. The lobes on the camshaft determine how much a valve protrudes and it's duration. We can source performance camshafts where the valve lift or timing needs to be changed to increase power / torque at a given engine speed. Camshafts are made in different materials and different methods are used to construct the camshaft. Many are a chilled cast iron construction which is cast and then precisely machined to specification. Other camshafts are constructed in a manner where the cam lobes are "sweated" onto a shaft. If your engine has this type of camshaft and suffers a timing failure, the lobes can be moved on the shaft without notice. This can cause mechanical failure if the camshaft is fitted with the lobes in the incorrect position. The camshaft should be checked by a local engine remanufacturer to ensure they are "in time". Some engines require a billet steel camshaft where the whole shaft is machined from hardened steel.

Rocker Arms

Rocker arms transfer mechanical energy from the camshaft to the valve. The cam shaft may be in direct contact with the camshaft or by a push rod. Push rods are typical in engines which have an OHV (overhead valve) design.

rocker arms
hydraulic lifters

Hydraulic Lifters

Hydraulic lifters rely on engine oil & pressure to ensure the correct valve clearance. Sticking hydraulic lifters can be audible through the valve train and cause premature engine wear. Regular servicing and using the correct oil is critical of smooth hydraulic action.

Cam Buckets

Cam buckets are a mechanical lifter that is often in direct contact with the camshaft. These buckets are cylindrical and have a range of different lengths or with a recess for a tappet shim. The bucket length will determine the valve clearance. You should calcluate which shim thickness or bucket length you will need to achieve this.


Trouble Tracer Chart

(source: Federal Mogul)

carbon deposits

Carbonised oil deposits

Appearance: Carbonised oil build-up on cam and followers.

Causes: Excessive operating temperatures resulting from marginal lubrication conditions due to contaminated lubricating oil or blockages/restrictions in oil feed galleries.

Remedy: Thoroughly flush the lubrication system, ensuring that all galleries and hydraulic lifters (where fitted) are free from blockages & debris. Install new camshaft and followers, prime with extreme pressure lubricant and replace oil and filter.

base circle contact marking

Base circle contact marking

Appearance: Witness marking on base circle of cam-lobes, biased to one side.

Causes: Worn hydraulic lifter and/or retainer springs.

Remedy: Replace cam and followers if marks are deep, otherwise set tappets to correct clearance. Thoroughly flush the lubricating system and replace oil and filter.

Cam-lobe and follower wear

Cam-lobe and follower wear

Appearance: Premature wear of one or more cam-lobes & followers. Follower contact surface will be concaved with chipped edges.

Causes: Incompatible cam-lobe & follower contact surface geometry. Often caused by fitting new camshaft with old followers or vice versa. Can also result from lubricant starvation from blocked or restriction in oil supply.

Remedy: Thoroughly flush the lubricating system, replace cam and followers, prime with extreme pressure lubricant and replace oil and filter. Do not mix old and new components.

Follower breakage

Follower breakage

Causes: Mechanical overload resulting from:

1 Sticking or seized valve, resulting in the follower to break due to cam-lobe pressure.

2 Piston contact with the valve due to:

  • Weak valve spring
  • Over extended hydraulic lifter
  • Incorrect assembly of valve tip-cap
  • Timing belt breakage
  • Or through over high revving of engine.

3 Incorrect valve timing.

Remedy: investigate & rectify the mechanical overload cause. Thoroughly flush the lubricating system, replace all damage components, prime cam and followers, with extreme pressure lubricant and replace oil and filter.

Excessive cam-lobe wear

Excessive cam-lobe wear

Appearance: Severe cam-lobe wear.

Causes: Contaminated lubricating oil, tappet clearances too tight, excessive valve spring pressure.

Remedy: Thoroughly flush the lubrication system, install new camshaft and followers. Adjust tappets to the correct clearances, prime with extreme pressure lubricant and replace oil and filter

Broken / snapped Camshafts

Broken camshaft

Appearance: Camshaft breakage between or through cam-lobes.

Causes: Severe distorted camshaft housing or cylinder head. Incorrect torque sequence and mishandling can also cause similar breakage.

Remedy: Straighten or replace camshaft carrier/cylinder head, use correct bolt torque sequence and handle with care. Thoroughly flush the lubricating system, replace cam and followers, prime with extreme pressure lubricant and replace oil and filter.

Scored bearings

‘Scored’ bearings

Appearance: Severe scoring of the camshaft bearings.

Cause: Contaminated lubricating oil, i.e. foreign particles circulating in oil.

Remedy: Thoroughly flush the lubricating system, replace cam and followers, prime with extreme pressure lubricant and replace oil and filter.

Overheated cam

Overheated camshaft

Appearance: Cam-lobes, bearings & followers have a ‘blue’ discoloration.

Causes: Severe overheating of engine due to malfunction of the cooling system.

Remedy: Investigate and rectify the cause of the overheating. Thoroughly flush the lubricating system, replace cam and followers, prime with extreme pressure lubricant and replace oil and filter

Physical damage chipped, shards, cracks

Physical damage to camshaft & followers

Appearance: Cam-lobes, bearings & followers “chipped”

Causes: Excessive end-float due to:

a). Worn thrust washer

b). Loose distributor

c). Worn distributor drive gear

d). Or misaligned timing gears

Remedy: Investigate and rectify the cause of the damage. Thoroughly flush the lubricating system, replace cam and followers, prime with extreme pressure lubricant and replace oil and filter.

camshafts, hydraulics, lifters & tappets

Cams & Followers

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Camshafts & Followers

We stock camshafts, cam followers, cam buckets, shims, hydraulic lifters / tappets and rockers arms for vehicles from all over the world, whether it be a car, commercial or marine. We keep high O.E quality products made by Ajusa, Freccia, AE.

engine conrod & main bearings

Engine Bearings

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Engine Bearings

We have a massive range of bearings for same or next day delivery. We stock Glyco, ACL, ACL Race Series, King, Vandervell, AE & Glacier. We also have a huge range of oversizes to suit damaged crankshafts. Camshaft bushes are also available.

gaskets, seals & bolts

Gaskets, Seals & Bolts

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Gaskets, Seals & Bolts

Our extensive range of gaskets, seals and bolts for American, European, Asian vehicles is the best in the UK. Whether it be Car, Commercial, Plant or Marine. We only supply quality gaskets that match the OEM specification or even exceed it. We supply Ajusa, Glaser & Payen


Pistons, Liners & Rings

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Pistons, Liners & Rings

We have stock of a wide range of pistons and piston rings whether they are standard or oversized. We can supply Goetze, Nural, AE, Hastings, Tarabusi & NPR. Mahle, KS & Forged pistons are available by special request.

timing belts & chains

Timing Belts & Chains

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Timing Belts & Chains

Making sure your timing belt / chain and tensioners are replaced at the correct intervals is vital to the reliability of your motor. A cam belt / chain failure can be catastrophic to your engine. We have a good range of belts, belt kits, chains and chain kits on a same or next day basis.

valves, Guides & Seats

Valves & Guides

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Valves & Guides

We have a massive range of valves and guides on our shelves for European and Asian motors. Our stock is of the highest quality and is produced in Italy & Germany. Components are also available for vintage and classic cars by special request

Water & Oil Pumps

Oil & Water Pumps

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Oil & Water Pumps

We keep a good range of Oil Pumps & Dayco water pumps included with Timing belt kits. Water pumps can be arranged to order separately at special request.

Technical Support

If you can't find what you are looking for or would like any advice on what components you may need, our experienced sales staff are happy to help. We can provide technical information about parts and applications. We are dedicated to the engine parts sector and the majority of our team have been with us since we started in 1987.

Fast Delivery

We offer a same-day delivery service to exclusive areas of England on our internal van service. For areas outside our van delivery area, we offer a guaranteed next day delivery with either UPS, Parcelforce, DSV or DPD to ensure your car parts are delivered quickly. Please see our information page for more details


We only stock components from the World's leading brands. All of our parts have a minimum of 12 months of manufacturers warranty and are of OEM standard or higher. We have built our reputation over the years by selling good quality products at a very competitive price with fast and reliable delivery.

Our Brands

Our range of Engine Parts manufacturers from all over the World. These are the leading brands of engine components supplying the World's OEM &aftermarket sectors.

ACL bearings

Engine Bearings

ARP Bolts & Fasteners

Racing Spec Bolts, Nuts & Studs

AE bearings, Camshafts, Valves, Pistons & rings

Camshafts, Followers & Valvetrain

athena gaskets

Racing Head Gaskets

dayco timing belts / cam belts

Timing Belts & Kits

dayco timing belts / cam belts

Piston Rings

Freccia engine valves, guides, cam followers, rocker arms & hydraulic lifters

Valves, Guides, Rocker arms & Hydraulic Lifters

FP Diesel

Heavy Duty, Industrial & Commercial Engine Parts

Goetze Piston Rings

Piston rings

Glyco engine bearings

Engine Bearings

Glaser gaskets, seals & bolts

Gaskets, Seals & Bolts

Hastings piston rings

Piston Rings

king bearings

Engine Bearings

Nural Pistons

Pistons & Liners

Osvat engine valves, guides, shims & pre-combustion chambers

Valves, Guides, Shims & Pre-combustion chambers

Payen gaskets, seals & bolts

Gaskets, Seals & Bolts

Tarabusi pistons & rings

Pistons, Liners & Rings

Mahle Pistons & Valves

Valvetrain, Bearings & Pistons