Jeep Grand Cherokee SRT & SRT-8 6.4L Hemi V8, 2012-2020, Cherokee 5.7L
MPI AutomotiveRRP$1350.91Jeep Grand Cherokee SRT & SRT-8 6.4L Hemi V8, 2012-2020, Cherokee 5.7L V8 2011-2015 3" Rear Mufflers for selected vehicle applications.
View partSSMBM801PHD
Jeep Grand Cherokee WK2, 5.7L Hemi V8 2011-2015, 3" Dual Center Hotdogs
Jeep Grand Cherokee WK2, 5.7L Hemi V8 2011-2015, 3" Dual Center Hotdogs for selected vehicle applications.
BrandMantaMPI Automotive
Category: Mufflers and resonators
RRP $1092.30 AUD
In stock at supplierAfterpay, Zip Pay & Zip Money available
Part specs
- SKU
- SSMBM801PHD
- Supplier
- MPI Automotive
- Category
- Mufflers and resonators
- Stock status
- In stock at supplier
The MPI Automotive SSMBM801PHD is a pair of 3in dual centre hotdog resonators for the Jeep Grand Cherokee WK2 5.7L Hemi V8 (2011–2015). Hotdogs are the play here: compact straight-through resonators that tame cruise drone while keeping the Hemi's flow up.
What does a centre hotdog do on a Hemi?
A hotdog is a slim straight-through resonator — a perforated core in a packed cylindrical body — fitted into the centre of the system. Rather than reflecting and absorbing to drop overall volume the way a chambered muffler does, it tunes out the resonant frequencies that boom in the cabin at cruise, while letting exhaust pass through largely unrestricted. On the 5.7L Hemi V8 that means the WK2 keeps its low-down V8 character but loses the worst of the highway drone. This is the centre-resonator path, not a rear muffler and not a full system.
How does the dual 3in layout suit the 2011–2015 WK2?
This unit runs as a dual centre pair in 3in, carrying both banks of the Hemi V8 through the mid-section with a hotdog on each side. The 3in bore is sized for the engine and the dual layout keeps the left and right sides balanced through the centre of the WK2 Grand Cherokee. It's listed to fit the 5.7L Hemi V8 from 2011 to 2015; confirm your exact build with the workshop, as the WK2 ran several driveline variants over those years.
Is it road legal?
These are centre resonators only — they don't include or delete the catalytic converter, so the cat-delete off-road rules don't apply to this part. The final note depends on the rest of the system; confirm the in-service result and any state requirements with the workshop before fitting.
What does fitting involve at our Illawarra workshop?
Oak Flats Muffler Men fits Grand Cherokee centre resonators in-house across the Illawarra, checking the dual hotdogs clear the floor and tunnel and mate cleanly to your front and rear pipework. The SSMBM801PHD carries a published RRP of $1,092.30; send your build and we'll confirm fitment and book the bay.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Common questions
- What do the hotdogs change on my Grand Cherokee?
- They cut the resonant cruise drone while keeping flow up, so the Hemi keeps its character without booming on the highway. They don't focus on lowering overall volume the way a full muffler does.
- Will it fit my WK2?
- It's listed to fit the Jeep Grand Cherokee WK2 5.7L Hemi V8 from 2011 to 2015. Confirm your exact build with the workshop before ordering.
- Is this a full exhaust?
- No — it's the dual 3in centre hotdog resonators only. They pair with your existing front and rear pipework.
Fitment support across the Illawarra
Fitment checks near you across 18 Illawarra suburbs, from Oak Flats and Shellharbour to Wollongong and Kiama.Show nearby fitment areasCollapse section
Oak Flats Muffler Men can check this part against supplier specs, part number, image, RRP and vehicle details for customers around Oak Flats, Shellharbour, Wollongong, Dapto, Albion Park, Kiama and the northern suburbs.
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Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.