OEM part required 6 classes
Must remain OEM.
- Four-Stroke Ski Lites · N.3.2
- Ski GP2 · L.3.2
- Ski Lites · O.3.2
- Drag, Yamaha Pro Stock · DD.1
- Drag, Sea-Doo Pro Stock · DD.2
- Drag, Yamaha Spec · DD.3
IHRA · Fuel
Aftermarket or substituted fuel tank, IHRA
IHRA answers this part for 29 of its classes. 1 of those answers permit the part outright and 7 permit it with stated conditions, leaving 21 that do not. 3 of the ones that do not are classes we read as open rather than as refusing it. 10 are inferred from how the class is written rather than quoted from a rule naming this part.
This page is IHRA only, and the bodies do not agree. The same part under IJSBA and UIM. Which one applies to you is decided by whoever sanctions the race you enter.
Where it stands, class by class
29 classes, grouped where the same rule gives the same answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.
What each answer below means
- OEM part required
- This comes off. Only the part the manufacturer fitted is allowed here.
- Not permitted, not listed in the rules
- Treat it as coming off. The class requires the craft to stay stock except where the rules allow otherwise, and this part is not on the list, so this is our reading rather than a rule we can quote at you.
- Legal, with conditions
- Keep it, but measure it: the rules permit this part only inside stated limits.
- Legal
- Keep it. The rules permit this part in this class.
- No rule, this is an open class
- Probably keep it. The class carries no stock clause at all, so anything unlisted appears to be open. The rulebook does not say so in terms, and this is our reading rather than a permission anybody wrote down.
OEM part required 2 classes
Must remain OEM. The same rule first permits aftermarket tanks and then requires OEM, so this site reads it as OEM only.
- Ski 1100 Modified · R.3.3
- Ski 1500 Modified · Q.3.3
OEM part required 1 class
Two-stroke entries: Original tank, pickup, filler, filter, tap assembly, relief valve unmodified. The petcock may be bypassed. · Z.5.2
OEM part required 1 class
Only the OEM fuel tank may feed the engine on either engine type, since P.1 and P.2 carry over N.3.2 and O.3.2 and the P.2 additions leave the tank alone. · N.3.2, O.3.2
OEM part required 1 class
OEM tank and filler assembly unchanged. Filter and petcock may be aftermarket. · BB.4.4
Not permitted, not listed in the rules 7 classes
On a closed list an unlisted modification is not permitted. · A.2.2, J.1
Legal, with conditions 1 class
Smaller OEM tanks allowed, e.g. a Spark tank in an RXP-X. · DD.4
Legal, with conditions 1 class
Replacement tanks must come from another PWC. Fully aftermarket only with Race Director approval. · T.3.3
Legal, with conditions 1 class
Fuel fillers must come from another OEM watercraft. · S.3.3
Legal, with conditions 1 class
NOT restricted to a homologated watercraft. Must meet or exceed original strength and safety standards. Securely fastened. Filler may be relocated, including internally. · CC.3.4
Legal, with conditions 1 class
Must be an unmodified tank from another watercraft. Non-OEM tanks only with Technical Director approval meeting OEM strength and safety. · K.4.2
Legal, with conditions 1 class
Two-stroke: components must be unmodified and from another PWC; fully aftermarket allowed if meeting/exceeding OEM strength and safety. Original filler and relief valve must be used unmodified. Vapor/air separators max 2 in x 6 in with an always-open return line. ADDITIONAL FUEL RESERVOIRS PROHIBITED. Four-stroke (V.5.4): tank must be an unmodified OEM PWC part. · V.3.3
Legal, with conditions 1 class
Must be OE; replacements may come from another PWC if unmodified. Fully aftermarket only with Race Director or Technical Director approval. Filler and relief valve must remain OE unaltered. · X.3.4
Legal 1 class
Aftermarket fuel tanks are allowed, provided the tank is securely fitted without creating a hazard, in a closed fuel system that never vents or spills. · U.3.3
No rule, this is an open class 3 classes
The class states only what it bans and calls itself run what you brung, against a section DD preamble that says anything unlisted is illegal.
- Drag, 2 Stroke Unlimited · DD.12
- Drag, Stand Up Unlimited · DD.10
- Drag, Unlimited · DD.6
Aftermarket or substituted fuel tank: if the rule your class applies reads differently to you, or the rulebook has changed since this was read, ask. We answer with the section we read it from, or that we have not read it. Ask a rules question.
Every IHRA class · where the rulebooks differ · checks on parts the shop sells · how this site reads a rulebook.
Fuel · two and four stroke · legal in 8 of 29 answered, 7 with conditions