- Joined
- Oct 19, 2025
- Messages
- 184
Thanks. I read that too but it made me suspicious... Why would someone buy an oem interchangeable part and willingly spend $200 more?Looks like one is originally for Cali emissions, and the other is for Federal. The aftermarket has combined both into a single PN, so it seems you could use either without issue.
No idea, but some people are picky. The only starters I've ever installed on K24's are the Denso reman's. Never had one fail, and I've installed quite a few over the years.Thanks. I read that too but it made me suspicious... Why would someone buy an oem interchangeable part and willingly spend $200 more?
I found the denso remans on rock auto. Since the original OEM lasted 221k and the job is not super easy l preferred to go oem.I just buy Denso remanufactured starters for the last 20+ years so far all has been good unlike the parts store junk I've had over the years. I would look up Denso and see if they have 1 or 2 starters listed for your honda.
How is a starter impacted by emissions compliance rules ?Looks like one is originally for Cali emissions
A sticker maybe?How is a starter impacted by emissions compliance rules ?
(Question is for anyone)
This is what I was going to ask as I worked emissions testing for a while.How is a starter impacted by emissions compliance rules ?
(Question is for anyone)
I ended up doing one twice because a jobber one only lasted a couple of years, pure garbage; the Mitsuba from the junkyard worked better. Knowing that the Densos are a good choice is helpful; not that I had any doubts. Bosch would be another one I'd consider after Denso.No idea, but some people are picky. The only starters I've ever installed on K24's are the Denso reman's. Never had one fail, and I've installed quite a few over the years.
I like using Denso's for both the reliability and the fact that most of their stuff is reman'd in Long Beach, CA.I ended up doing one twice because a jobber one only lasted a couple of years, pure garbage; the Mitsuba from the junkyard worked better. Knowing that the Densos are a good choice is helpful; not that I had any doubts. Bosch would be another one I'd consider after Denso.
Back in the day when I ran a shop, I only sold Bosch alternators and starters for a while. They were of good quality, came with a good warranty and included roadside assistance.
Regional differences in emissions rules can cause manufacturers to supply different equipment for cars that get sold in different states. It could be something as simple as differently shaped bell housing or ring gear that trickled down from another change. There are also cold weather and hot weather versions of many cars that aren't obvious when you buy them. Honestly it could be a lot of reasons and it's probably something inconsequential.How is a starter impacted by emissions compliance rules ?
(Question is for anyone)
Bosch sold off their reman business to a chinese company -- and I'm still bitter about it. I'm not sure if that's all Bosch alternators and starters or just certain ones, but I got one of the bad ones.I ended up doing one twice because a jobber one only lasted a couple of years, pure garbage; the Mitsuba from the junkyard worked better. Knowing that the Densos are a good choice is helpful; not that I had any doubts. Bosch would be another one I'd consider after Denso.
Back in the day when I ran a shop, I only sold Bosch alternators and starters for a while. They were of good quality, came with a good warranty and included roadside assistance.
I’d love to hear some actual specific examples of this. Besides possibly California, what other regions have differing emissions rules that would affect the build?Regional differences in emissions rules can cause manufacturers to supply different equipment for cars that get sold in different states. It could be something as simple as differently shaped bell housing or ring gear that trickled down from another change. There are also cold weather and hot weather versions of many cars that aren't obvious when you buy them. Honestly it could be a lot of reasons and it's probably something inconsequential.
I was hoping to get this info as well but it might to specific and these are aging parts. So here is to hoping!I’d love to hear some actual specific examples of this. Besides possibly California, what other regions have differing emissions rules that would affect the build?
So manufacturers account for part number differences during manufacture based on sales location? Re: your bell housing example.
Cold weather and hot I do see but it’s based on a specific “cold weather package” that’s reflected in the build spec.
18 states and D.C. have adopted the CARB emissions standards for either partial or all regions as of 2026.Regional differences in emissions rules can cause manufacturers to supply different equipment for cars that get sold in different states. It could be something as simple as differently shaped bell housing or ring gear that trickled down from another change. There are also cold weather and hot weather versions of many cars that aren't obvious when you buy them. Honestly it could be a lot of reasons and it's probably something inconsequential.
I’d love to hear some actual specific examples of this. Besides possibly California, what other regions have differing emissions rules that would affect the build?
Not exactly, parts/part number differences are typically a result of supply chain differences based upon which factory the engine and/or vehicle is assembled. Since the OP is discussing a Honda Accord, I can relay my knowledge of the parts differences in a 2001 (6th Gen.) Accord. The 4 cyl. 2001 Accord was available with 3 different 2.3 liter engines depending on trim level and emissions equipment certifications. F23A4 (ULEV) versions were CARB compliant and had VTEC, wideband fuel sensors, a more efficient manifold, and CARB catalytic converters. The F23A1 (LEV) engines had VTEC, narrow band O2 sensors, a different exhaust manifiold with non-CARB catalytic converter and different ECU. The F23A5 (LEV) engine was non-VTEC, had narrow band O2 sensor and different idle air control valve configuration. The F23A4 (ULEV) version could be sold new in CA (& all other 49 states), while the other versions were not CARB compliant. My late friend purchased two 2001 Accords in a non-CARB region of VA. One had the F23A4 (ULEV) engine, the other had the F23A5 (LEV) engine.So manufacturers account for part number differences during manufacture based on sales location? Re: your bell housing example.
Well I guess it was mostly a reference to different starters. But thanks.18 states and D.C. have adopted the CARB emissions standards for either partial or all regions as of 2026.
Not exactly, parts/part number differences are typically a result of supply chain differences based upon which factory the engine and/or vehicle is assembled. Since the OP is discussing a Honda Accord, I can relay my knowledge of the parts differences in a 2001 (6th Gen.) Accord. The 4 cyl. 2001 Accord was available with 3 different 2.3 liter engines depending on trim level and emissions equipment certifications. F23A4 (ULEV) versions were CARB compliant and had VTEC, wideband fuel sensors, a more efficient manifold, and CARB catalytic converters. The F23A1 (LEV) engines had VTEC, narrow band O2 sensors, a different exhaust manifiold with non-CARB catalytic converter and different ECU. The F23A5 (LEV) engine was non-VTEC, had narrow band O2 sensor and different idle air control valve configuration. The F23A4 (ULEV) version could be sold new in CA (& all other 49 states), while the other versions were not CARB compliant. My late friend purchased two 2001 Accords in a non-CARB region of VA. One had the F23A4 (ULEV) engine, the other had the F23A5 (LEV) engine.
Some OEMs use different cold and hot weather equipment based on the state or location of sale. A great example is on the BMW M54 engines which they sold millions of. In "cold weather" areas they would insulate the crankcase ventilator system (which consisted of about 5 large hoses, a diaphragm, and a cyclone separator that sat under the intake) because the uninsulated system would have a lot of water condensation, which would mix with oil and cause mayonnaise. The "hot weather" areas got cars that did not have the insulation. You couldn't tell from any option or from the VIN whether it had the insulation.I’d love to hear some actual specific examples of this. Besides possibly California, what other regions have differing emissions rules that would affect the build?
So manufacturers account for part number differences during manufacture based on sales location? Re: your bell housing example.
Cold weather and hot I do see but it’s based on a specific “cold weather package” that’s reflected in the build spec.