Mazda RX-8 Sump Replacement Parts
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A buyer's guide to used Mazda RX-8 sump
No two sumps are quite the same across different vehicles, so getting the specifics right matters when you buy used, second hand or a replacement. Answer a few quick questions below and breakers will only quote if they have the exact matching part in stock:
- State whether it's petrol or diesel
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Used sump for other Mazda models
Fitment questions
Will a sump from a 2004 RX-8 fit my 2007 RX-8?
The RX-8 was produced as a single generation from 2003 to 2012, with a facelift in 2008, so a 2004 and a 2007 car both sit in the pre-facelift period and are likely to share the same sump. The critical thing to cross-reference is the engine code rather than the year alone, as the rotary 13B-MSP Renesis engine is what really drives sump compatibility. Supply your registration or engine code to the breaker and ask them to confirm the sump matches before you buy.
Does a post-facelift (2008 onwards) RX-8 sump fit a pre-facelift (2003–2007) car?
The 2008 facelift is a known production boundary, and while both pre- and post-facelift RX-8s use the 13B-MSP Renesis rotary engine, there can be ancillary and mounting detail changes across that boundary. You should not assume a sump from the two periods will swap straight in without checking. Confirm fitment with the breaker by quoting both registration numbers so they can compare the specific parts.
Does the trim level affect which sump I need — for example, does a Sport or PZ spec car use a different sump?
Trim levels like Sport, PZ (Premio Zenith), and later R3 are cosmetic and equipment-based distinctions — they do not change the engine, so trim level has no bearing on sump fitment whatsoever. The sump follows the engine code, not the badge on the bootlid. Just confirm your engine code (found on the V5 or a VIN check) and the breaker will be able to match the correct part.
Does it matter whether my RX-8 is an automatic or manual when buying a used sump?
The sump sits on the engine and is not directly part of the gearbox assembly, but gearbox type can occasionally influence ancillary clearances or mounts depending on how the drivetrain is packaged. Gearbox type is worth mentioning to the breaker alongside your engine code, just as a precaution. It is unlikely to be the deciding factor here, but it costs nothing to confirm.
What engine code should I quote to a breaker when asking about a Mazda RX-8 sump?
The engine you are looking for is the 13B-MSP Renesis rotary unit, which is the engine fitted across the RX-8 range throughout its 2003–2012 production run. You can find the full engine code stamped on the engine itself or listed via a VIN check, and giving this to the breaker is the single most useful piece of information for confirming sump fitment. Do not rely on the model year or trim name alone — the engine code is what matters.
Can I use a sump from a 231 bhp RX-8 on a 189 bhp car?
The RX-8 was offered in 189 bhp (six-speed manual) and 231 bhp (six-speed manual) outputs, both using the 13B-MSP Renesis rotary engine, but there are internal differences between the two states of tune. Whether those differences extend to the sump is something you should confirm with the breaker against both registration numbers or engine codes, rather than assume interchangeability. Route this one to the breaker with both specs clearly stated.