EF EL AU Falcon 4L Lifters HLA Lash Adjusters Set 11mm x 12

Description

Restore the smooth, quiet operation of your classic Ford inline-six with this set of quality Hydraulic Lash Adjusters (HLAs).
These 11mm lifters are a direct replacement for worn or faulty components that cause the common tapping or rattling noise in the top end of the engine.
Over time, factory lifters can lose their ability to maintain correct valve clearance, leading to decreased performance and annoying engine noise; installing these precision engineered adjusters is one of the most cost effective ways to eliminate those symptoms.

Specifically designed for the EF, EL and AU Falcon series, these lifters suit cylinder heads with the 94XX (and onwards) part number. It is essential to verify your head casting before ordering, as earlier EA, EB, and ED models utilise a 14mm lifter found in heads marked with 91XX. By ensuring your valvetrain is correctly tensioned, you not only quieten the engine but also protect the camshaft and valves from premature wear caused by excessive lash.

Frequently Asked Questions

What are the benefits of replacing worn HLA lifters?

Noise reduction is a key benefit, eliminating the persistent ticking or tapping sound associated with high mileage EF-AU Falcon engines.
However, this cost effective replacement also provides some performance gains, maintaining consistent valve lift and timing by ensuring the hydraulic mechanism holds the correct pressure. This also helps prevent any further damage to the rocker arms and camshaft lobes by maintaining zero lash contact.

How do I know if my engine needs 11mm or 14mm lifters?

To determine which lifters you need for an EA, EB, ED, EF, or AU Falcon engine, the most reliable method is to check the part number cast directly onto your cylinder head.
14mm Lifters (91XX): If your cylinder head part number begins with 91XX, your engine requires 14mm lifters. These are typically found in EA, EB, and ED Falcon I6 engines.
11mm Lifters (94XX): If your head part number begins with 94XX, your engine utilises the smaller 11mm lifters. These are standard for later EF and AU Falcon models.

Can I replace just one noisy lifter?

While you can technically replace just a single lifter in these Ford engines, it is strongly recommended that you replace the full set of 12 at once.
Because these engines utilise a shared oil supply and are subject to the same age and heat cycles, if one lifter has failed or become blocked, the others are usually not far behind. Replacing the complete set ensures a uniform valvetrain and prevents the domino effect where you find yourself removing the rocker cover repeatedly to swap out the next one that starts ticking.

Manufacturer part number: RHT4000H