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Has anyone installed one of these rear heater tubes on their vehicle? The specialist I use said he's installed 2 and they both came back with issues and leaking, so he won't install them anymore since it's so much work to replace them (on an SC engine, at least).
Curious about the general consensus. Strangely, they're almost entirely available on eBay and not many other places, which makes me believe he's correct and the factory plastic tube is a better part.
Similar cross over part numbers are AJ814056 LR122709 LR109402, LR018273, LR077042, LR087559, LR122709, AJ814007, AJ812458, AJ813849, AJ814056 and C2Z31645
Last edited by TraxtarXKR; Feb 17, 2026 at 02:09 PM.
One of the more thorough reviews from one of these listed on Amazon Canada:
I had the OEM plastic version of this split along the seam so I decided to try a metal one. There are a bunch on Amazon but they all appear to be the same design, so I picked this one since I could get it the next morning. The fact that this is held together with Philips head screws is not the most reassuring thing, but that part hasn't failed yet (unlike the OEM ones).
The smaller hose connection seems to be glued in with epoxy for some reason, and I noticed a slow leak in that area on mine. I thought it might be the hose clamp so I put a screw drive one on instead, but it still leaks, which is why now I'm thinking it's just this epoxy not fully sealing this. I'm outside the 30 day return window now, so apparently I'm out of luck. Wouldn't recommend taking a chance on this.
Edit: The seller saw my review I imagine, and offered to give me a refund outside of the return window. They didn't ask for a better review or anything, so I'll give them some credit for that. To give them another chance I ordered another one. The problem area on the new one looks much better.
It still seems to be epoxied in, but it is not gooped all over, and so far has not leaked. However, while I was swapping it I noticed the o-rings on the old one had sort of melted, which is not a good sign after only a few months. They were still holding up, but I don't know for how long. I bumped up my review one star, since it does seem to have fixed the problem with the new one, but I'm still not that happy with the overall quality.
Last edited by TraxtarXKR; Feb 17, 2026 at 02:09 PM.
Another Amazon listing shows the sensor blown out of the casting. Seems that for every few good reviews, there's a few bad ones as well. I think this answers my question, since they all seem to have the glued in pipe bung and temp sensor design.
Poor quality which lead to engine blow out!!! After 20 mins of driving sensor blow out of cooling pipe. Go figure preventative care on a jag engine, replacing the PVC pipes to an aluminum pipe and pour quality destroyed the engine of a preventative care part.
Last edited by TraxtarXKR; Feb 17, 2026 at 02:17 PM.
Another review with a video of leaking at the seam in the part. This design looks to have the hose bung as part of the casting, and a black sensor vs grey... So different design, and different failure. Not great.
Last edited by TraxtarXKR; Feb 17, 2026 at 02:23 PM.
I've been told by a few Jaguar shops that they have found the aluminum replacement coolant pipes have leaked after replacing the original plastic pipes. I would assume that if the aluminum pipe replacements are not genuine Jaguar/LandRover pipes sold through the dealerships, replacing the pipes with after market (often chinese) parts IS NOT the way to go. There is a fair amount of labor changing these parts. Why go through all the trouble to have them leak? As bad as the original plastic parts are, they were made from the factory, and they should fit properly if installed professionally. Other than age, if they are replaced properly, I'd stick with the OEM plastic parts. I had mine completely changed with OEM, 3 years ago, and so far so good......However, I do understand that the procedure will have to be done again, in 5-6 years from the original replacement date. This is one of the costs to Jaguar XK ownership.
@bocatrip , I concur. Moreover, what few seem to share is just how old/how many miles passed prior to the cross over pipe change and how diligent were they at keeping up the scheduled coolant change.
Epoxy on a metal part is telling. And o-rings that disintegrate... that's a bigger problem.
@bocatrip , I concur. Moreover, what few seem to share is just how old/how many miles passed prior to the cross over pipe change and how diligent were they at keeping up the scheduled coolant change.
Epoxy on a metal part is telling. And o-rings that disintegrate... that's a bigger problem.
Strangely enough, I had my rear heater tube replaced back in 2022 using factory parts, and have the car at the specialist for valve covers. He noticed the heater tube was starting to swell and we decided to replace it.
That's only 3 years of use... A very short lifespan, in my opinion.
Considering it's $1000+ for any job that requires a shop to remove the supercharger, that's a pricey consumable maintenance part.
Last edited by TraxtarXKR; Feb 17, 2026 at 03:24 PM.
@TraxtarXKR , interesting that the original lasted how long? compared to the replacement. And it was OE and not OEM?
I bought the car in 2019, so I can't say how much time before that the heater pipe was replaced. It already had the water pump and front coolant pipes replaced with Jaguar aluminum parts, so I doubt it was original to the car. Based on my vehicle purchase date, it was at least 3 years old, and the car was serviced by dealerships its entire life before I owned it.
The car was purchased with 35k miles and has about 70k on it today.
When it comes to coolant related parts, I only use Jaguar parts. The coolant pipe that failed after 3 years was purchased from Jaguar San Juan as they tend to have better prices with shipping than any of the dealers in Dallas, TX.
Last edited by TraxtarXKR; Feb 17, 2026 at 03:40 PM.
I bought the car in 2019, so I can't say how much time before that the heater pipe was replaced. It already had the water pump and front coolant pipes replaced with Jaguar aluminum parts, so I doubt it was original to the car. Based on my vehicle purchase date, it was at least 3 years old, and the car was serviced by dealerships its entire life before I owned it.
The car was purchased with 35k miles and has about 70k on it today.
When it comes to coolant related parts, I only use Jaguar parts. The coolant pipe that failed after 3 years was purchased from Jaguar San Juan as they tend to have better prices with shipping than any of the dealers in Dallas, TX.
i had one on my f type, it started leaking right away.
Two things to consider when replacing coolant pipes for our cars.... Only using OEM from the dealership, and a proper professional installation. If these parts are not installed correctly, and any seals get pinched or are not aligned perfectly, leaking is inevitable. In addition, any pipes that were previously installed and/or just installed should not be disturbed when putting everything back together, or again, issues begin.
Those castings look to be incredibly poor quality.
I replaced my forward cooling pipes with metal ones from eBay after the original plastic ones started leaking. It was a massive PITA, especially the one in the valley under the SC (and in particularly since I was practically one handed after blowing out by rotator cuff).
The new ones started leaking massively quite quickly. Ended up having a local shop replace with real Jaguar parts since I was recovering from surgery. No leaks now. The aftermarket ones showed significant O ring deterioration after just a couple K miles, and never seated quite right.
Aluminum heater tube AJ814007
