F-250 Tailgate Step Handle Cap: The OEM Part Number, the Real Prices, and Why Aftermarket Wins
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About a month ago, I was helping my dad move some things from our storage room to his shop. We were loading parts into his 2019 F-250 Super Duty and needed to climb into the bed to position the load. My dad lowered the tailgate and flipped out the integrated step, then pulled up the telescoping grab handle to lock it vertically. Standard procedure. We had done it hundreds of times.
This time, the part that locks the yellow plastic cap in place at the top of the handle snapped off in his hand.
It was not the first time the cap had loosened, but it was the first time it was officially dead. What followed was a frustrating search that turned into something more interesting: a quietly absurd piece of how Ford catalogs replacement parts, and a thriving aftermarket built to work around it.
What the part is
The part is the yellow plastic end cap at the top of the telescoping grab handle on Ford’s tailgate step assembly. The step is an integrated feature on Super Duty (and F-150) trucks: a fold-out platform that recesses into the tailgate, paired with a vertical assist handle that telescopes up to give you something to hold onto when climbing into the bed.
The cap at the top of that handle has one job: cover the metal end of the handle so your hand isn’t gripping bare aluminum. It is friction-fit (it just pushes onto the end of the handle) and made from plastic.
When the cap fails, the plastic becomes brittle and cracks at the weakest points such as the hole for locking it in place to the handle.
What it fits
This guide and the part numbers below apply to:
Fits: 2015–2025 Ford F-150, 2017–2024 Ford F-250 / F-350 Super Duty, equipped with the optional Tailgate Step (Flex Step) and without a split tailgate.
Note: the 2011–2016 first-generation Super Duty tailgate step uses a different handle assembly and a different OEM part number (the older 9L3Z-9943300-A handle for that era’s F-150). Don’t order replacements intended for the 2017+ generation for an older truck.
The OEM part number
The Ford OEM part number for the tailgate step handle is FL3Z-9943300-A.
Ford catalogs it under a few names depending on the dealer site you land on:
- “Tailgate Handle”
- “Handle – Tailgate”
- “Step Assist Bar”
- “Luggage Compartment Handle” (yes, really, FordPartsGiant uses this title even though the description correctly says “Handle – Tailgate”)
Other useful identifiers:
- Position in Ford’s catalog: Rear, Rear Inner
- Item weight: 6.20 lbs
- Item dimensions: 4.2 × 4.1 × 24.9 inches
- Ford catalog description: “Without split tail gate, with Flex step”
Here is the key fact, and the one almost no one tells you
Ford does not sell the yellow plastic cap as a separate part. The smallest serviceable component in Ford’s catalog is FL3Z-9943300-A, and that is not the cap. That part number is the entire 25-inch, 6-pound telescoping assist bar assembly. The yellow cap is integrated into it.
If the cap on your handle breaks and you call your Ford dealer, you will be quoted the price for the whole assembly. There is no sub-part number for just the failed plastic tip. Forum threads going back over a decade are full of owners discovering this at the parts counter. At least one Ford dealer initially quoted an F-150 owner $80 for “the handle,” only to walk it back and tell him the only available part was the full $260 assembly. Other owners asking online for a sub-part number for just the yellow knob have gone unanswered for years.
This is why a thriving aftermarket exists for this part. Ford has chosen to catalog at the assembly level. Independent vendors fill the obvious gap by making and selling just the cap.
Why the OEM cap breaks
The OEM cap is not badly designed, but it is not built to last either. A few things work against it:
Friction-fit only. There is no mechanical fastener holding the cap on. As the plastic ages and shape changes, the fit loosens, and a firm grip pulls it off or breaks the plastic locking mechanism.
Use case mismatch. The cap is exactly what you grip when you pull up the telescoping handle. Every time you use the step, you load the weakest part of the assembly. After enough cycles, it fatigues.
This is why “they all break eventually” is the most common complaint visible across Super Duty forums, eBay listings, and Etsy reviews. Buying another OEM cap means buying the same part that just broke (and buying a whole bar to get it).
The search problem
The most annoying part of finding a replacement was not the cost. It was the name.
Here are the search terms I tried before landing on the right one:
- “F-250 tailgate handle cap”
- “F-250 tailgate step handle plug”
- “Ford Super Duty tailgate handle cover”
- “Tailgate handle end cap Ford”
- “F-250 grab handle cap”
- “F-250 tailgate step handle cap”
None of those produced clean results. I got dozens of unrelated parts: tailgate latch handles, exterior door handle caps, interior grab handle covers, and parts for completely different trucks.
What finally cracked it was an Etsy listing where the seller used the part’s full official name:
Ford Tailgate Telescoping Step Assist Bar Handle.
That is the phrase. Once you have it, the search opens up. Ford uses “step assist bar” in its parts catalog. Knowing that one term saves about forty-five minutes of digging.
A small warning about online prices: while researching this, I noticed search engine result snippets showing the part listed at around $90. When I clicked through to the actual dealer pages, the live price was almost always $200 or higher. Those snippet prices are stale data that the search engine cached months ago and never refreshed. Trust the live page, not the snippet preview.
The real buying landscape, broken down by tier
There are four practical ways to fix a broken tailgate step cap. The right answer is at the bottom.
Tier 1: Genuine new OEM from an authorized Ford dealer
This is the entire handle assembly, FL3Z-9943300-A, brand new, from a Ford-authorized parts seller. Current pricing from live dealer pages (May 2026):
- MSRP: $322.07 (Ford’s published suggested retail)
- ford.oempartsonline.com: $217.97
- FordPartsGiant.com: $218.36
- eBay listings from Ford dealer storefronts (e.g., Archie Cochrane Ford): $193 to $265, depending on shipping included
What you receive: a 6-pound, 25-inch black telescoping bar with the yellow plastic cap on top. Brand new. Carries Ford’s factory warranty. And the same plastic cap that will eventually fail again.
Tier 2: Used OEM from a private seller on eBay
Junkyard pulls and parts-out vehicles produce a small secondary market for the full handle assembly. Current examples on eBay:
- A used 2015–2020 F-150 tailgate handle listed at $69
- Other used listings around $90
This is the cheapest way to get a genuine Ford-stamped handle. The catch: supply is limited (you are at the mercy of whatever has been parted out lately), pricing varies week to week, and most importantly, you are buying the same yellow plastic cap that will fail. You may be a year or two from the same problem you are trying to solve.
Tier 3: Aftermarket plastic caps on Amazon and eBay
This is what you get if you search “F-250 tailgate handle cap” on Amazon and pick the cheapest result that ships next-day. Pricing typically runs $25 (not including shipping). Many are 3D printed by small shops. Some are injection-molded plastic copies from generic auto-parts manufacturers.
These do work. They are not OEM, they carry no Ford warranty, and the build quality varies wildly. The 3D printed ones, especially those printed in PLA, often fail faster than the part they replace. The cheap injection-molded copies are roughly comparable to OEM in durability, which means they’ll also eventually fail in the same way.
Examples:
- 2017+ F250 F350 Tailgate Handle Knob / End on Etsy. The Ford logo adds a nice finishing touch.
- Ford Tailgate Telescoping Step Assist Bar Replacement Handle (Yellow) on eBay.
Tier 4: Machined aluminum cap from a specialty vendor
This is what my dad ended up buying, and it is the answer to a problem the previous three tiers do not solve: the cap itself is the failure point, so replacing it with another plastic cap just resets the clock.
A machined aluminum cap from good-stuff-you-all-need on eBay runs $39 shipped. The vendor’s story is that they bought three OEM replacements that all failed, then designed and machined their own from aluminum, in a range of colors. Unlike the OEM, it is built rugged and doesn’t wear after several hundred uses.
We picked ruby red, which color-matches the truck. The install took about 15 seconds. Push the handle cap down into the tube and place the locking pin through the hole (see image).
The logic of this market
If you put the four tiers side by side, the absurdity of the OEM path becomes obvious.
| Option | Price | What you actually get | How long until it fails again |
|---|---|---|---|
| New OEM (Tier 1) | $193–$265 | Entire 6-lb assembly | 5–7 years (same plastic cap) |
| Used OEM (Tier 2) | $69–$90 | Entire 6-lb assembly | 1–5 years (cap is older already) |
| Cheap aftermarket (Tier 3) | $25 + shipping | Just the cap | 1–4 years |
| Machined aluminum (Tier 4) | $39 | Just the cap | Effectively permanent |
The first two tiers force you to buy an entire mechanical assembly when the only thing that ever fails is a small piece of plastic at the top. Imagine if when a single windshield wiper blade wore out, the manufacturer’s only response was to sell you the entire motor assembly. That is roughly what is happening here.
And there is a second order absurdity to it: even if you buy the new OEM handle and get a brand-new yellow cap, the rest of the assembly you receive is identical to the one already on your truck: same telescoping bar, same latch mechanism, same hardware. You are paying $200+ to inherit ninety-five percent of a part you already own, just to replace the five percent that failed.
Tier 3 solves the right problem but introduces a new one: 3D printed plastic often fails faster than OEM. Buying a cheaper version of the part that just broke is rarely the right move.
Tier 4 is the only option that targets the actual failure point with a material that defeats the failure mode. Aluminum does not wear the same as plastic. The price difference between Tier 3 and Tier 4 is about 5 to 10 dollars after factoring in shipping (shipping cost varies by address and location). The longevity difference is between “a year or two” and “the lifetime of the truck.”
Installation
Installation is simple. Put the cap in and place a pin through the mounting hole. Pull off the old cap, wipe out the inside of the handle tube, push the new cap on by hand, put the metal pin through the hole.
If a 3D printed replacement fits too loose, you can shim it with a thin wrap of electrical tape around the handle stem. Do not use adhesive. You want to be able to swap it later if you ever change color or upgrade.
The takeaway
If you have a broken tailgate step cap on your F-150 or Super Duty, here is the short version:
- The correct part name is the Ford Tailgate Telescoping Step Assist Bar Handle.
- The Ford OEM part number is FL3Z-9943300-A, but Ford only sells it as the entire $200+ handle assembly. The yellow plastic cap is not a separately serviced part.
- Used OEM handles run $69 to $90 on eBay but supply is limited and you inherit the same plastic cap.
- The 3D printed ones may fail faster than the part they replace, particularly if they’re printed in PLA (a low-cost biodegradable filament that softens in heat and gets brittle as it ages).
- A machined aluminum cap runs about $39 and is the only option that targets the actual failure point.
It is a $40 part on a $60,000 truck. The fact that a small machine shop solved the problem and sells the fix for $39 is exactly the kind of story this site is here to tell.
Save yourself the search and start with the right name.
The truck’s name is Ruby. Her step works again and the cap matches her color perfectly!