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Denstoj Rocker Retainer Kit for FA and FB Subaru/Toyota Engine

Denstoj Rocker Retainer Kit for FA and FB Subaru/Toyota Engine

$899.00
$899.00
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In stock
  • OEM drop-in
  • Worldwide shipping
  • 100% happiness guaranteed

Don’t build a Subaru FA or FB engine without these. Rev with peace of mind!

The Subaru FA & FB engines (eg. FA20 in the Toyota 86) have a fatal flaw. When a valve spring loses pressure, the rocker arm assembly can fall out. If it's picked up by the camshaft, it gets shot out the tappet cover, causing oil to spill onto the exhaust headers, potentially catching fire. 

Now, without the rocker, the valve can drop inside the cylinder and destroy the piston. Yes, sometimes it’s an over rev but it can happen across the rev range even on your daily driver.

So if you drive a Toyota 86, or any Subaru with an FA or FB engine, this IS the most important upgrade you can do to save you an expensive engine rebuild. It’ll give you peace of mind when driving.

YES it's the same on the 2022 GR86 and NO the spring recall has not fixed this.

Why Choose Our Rocker Retainer Kit?

Engine rebuilds can cost thousands of dollars, often ranging between $5,000 to $10,000, depending on the extent of the damage. Parts alone, such as pistons, valves, gaskets, can add up quickly. Our Rocker Retainer Kit, is a fraction of that cost and offers peace of mind by preventing a potential catastrophic failure that could leads to an expensive rebuild. 

Protect your investment and drive with confidence knowing your engine is safeguarded.

If you aren't 100% satisfied with your purchase, we'll provide a refund within 30 days of receiving your rocker retainers.

WHAT'S INCLUDED

  • 16x Denstoj Pivots (Billet alloy steel and heat treated)
  • 16x Denstoj Rocker Retainer Clips (High carbon steel and heat treated)

VEHICLE APPLICABILITY

Our kit works on all Subaru FA and FB Engines (FA20D, FA20F, FA24F, FB16, FB20, FB20A, FB20D, FB20X, FB25, FB25B) which are in the below vehicles.

Note: The Subaru FA20 in the Toyota 86 is also known as the 4U-GSE.

Make Model Year
Toyota 86 2012-2021
Toyota GR86 2022-Present
Scion FR-S 2013-2016
Subaru Ascent 2019-Present
Subaru BRZ 2013-Present
Subaru Crosstrek 2013-Present
Subaru Forester 2011-Present
Subaru Impreza 2012-Present
Subaru Legacy 2013-Present
Subaru Outback 2013-Present
Subaru WRX 2015-Present

PART NUMBERS

Our pivot replaces:

Manufacturer

Part Number

 Supersessions Description
Subaru 13296AA100 13296AA040; 13296AA050; 13296AA051; 13296AA090 PIVOT
Toyota SU00306140 SU003-06140; SU00300283; SU00304520 PIVOT

 

Our rocker retainers worth with the following rocker arms:

Manufacturer

Part Number

 Description
Subaru

13249AA250

 VALVE ROCKER
Toyota SU00300278 VALVE ROCKER

FITTING INSTRUCTIONS

The valve clearance/lash specification for the FA20 is:

  • Inlet 0.10-0.16 mm (cold)
  • Exhaust 0.21-0.27mm (cold)

We have a worksheet to help when setting up the valves here: Denstoj Subaru FA20 Valve Adjustment Worksheet.

For complete instructions see this page on our website here: Fitting Instructions for Rocker Retainer Kit on FA and FB Subaru Engines.

The pivots are solid, not hydraulic in the Subaru FA & FB engines. Lash adjustment is done manually via shims. These are available separately from your local Toyota dealership as per the normal valvetrain setup procedure.  

Please note, install at your own risk. Clips must be installed correctly so as to not place any load on the clip except under preventative circumstances where the rockers are unloaded.

Although they are OEM drop-in, whenever valavetrain work is being done, clearances must be set for your specific engine.

View full details

Used by the best

DO NOT build a Toyota 86 engine until you watch this 👇

THE PROBLEM

  • Disaster

    The Subaru FA20 engine in the Toyota 86 has a fatal flaw. 

  • Floating rocker

    When a valve spring loses pressure, the rocker arm can fall out. 

  • Projectile

    If it's picked up by the camshaft, it gets shot out the tappet cover!

  • Destroyed

    Without the rocker, the valve can drop inside the cylinder and destroy the engine.

Ricardo from California

I wish I knew about this sooner

"I found out the hard way...I started the car, heard some sound, didn't think much of it and then on my short drive to my appointment, I noticed smoke and a trail of oil...FML"

Patrick from Colorado

My weekend ended early

"First session of open lapping my engine blew. One of the rockers blasted a hole in my valve cover. Pieces keep falling out and I've got a nice hole in the block."

Valve float animation

We didn't know about this problem either until we blew up three engines in the Australian Toyota 86 race series!

We were sick of spending thousands of dollars rebuilding new motors, so we designed a fix.

Demonstration on the engine👇

OUR SOLUTION

CLIP

We've designed a clip that holds the rocker in place when the valve spring loses control of the valve, causing the rocker to become unloaded.

PIVOT

To do this, we've re-designed the pivot so that it has a groove for the clip to attach to.

In normal operation, the groove is wide enough so that the clip clears the pivot, however, if the rocker tries to dislodge it is caught by the wider part of the groove.

CLIP + PIVOT

Combined, the rocker is held secure in the valvetrain. There are no changes to the rocker arm.

Rocker Retainer animation

KEY BENEFITS

  • OEM Drop In

  • Prevent a Costly Rebuild

  • Rev with peace of mind

Customer Reviews

Based on 16 reviews
94%
(15)
6%
(1)
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100.0
M
M.K.
Must have for any top end work

If you’re doing any sort of top end work, this product is a must have to improve the reliability of your FA20 motor.

If you’re adjusting valve clearance like I was, or taking off valve cover or cam carrier for a reseal, it’s almost like a “yeah sure why not” sort of situation to throw them in your engine. If you do something like road racing where you push your car hard, and happen to over rev your engine or have any sort of event that can cause valve float/valve spring surge, this is a great piece of mind knowing that your FA20 is gonna live to fight another day.

As of writing this, I have not yet put the engine back in my FRS with these clips on, however this boosts the confidence I have in driving this car, knowing that I will have a very reliable motor thanks to the Denstoj rocker retainer clips.

User picture User picture
M
Masanobu
最高です!

部品の信頼性も良いですが、日本までの到着も早いです!
とても良いパーツとお店です!

User picture User picture
J
Jesse

How do I install this are they all the same

D
Damion
Fa20 retainer kit

Great product great communication. Protect your motor it’s well worth it.

Thank you Damion, we are humbled and appreciate your kind words and review.

M
Miles Furlong
Protect your FA20

Run these in my BRZ track car, love the reliability and knowledge that I can full send and the rockers will stay in the engine

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FREQUENTLY ASKED QUESTIONS

Didn’t the spring recall fix this issue?

No. The spring recall was an issue with the spring material fracturing. As the rockers are still floating, they can still dislodge with the replacement blue springs. 

Hasn't the redesigned beehive valve springs in the 2022 GR86/BRZ fixed this issue?

No. The rockers are still floating. They can still dislodge with beehive valve springs. 

Will these fit the Subaru FA24 motor in the 2022 GR86/BRZ?

Yes.

Do you ship to the United States?

Yes! We ship worldwide with Australia Post, DHL and FedEx. Head to checkout for pricing. 

Feel free to ask any questions 👇