875828 Exhaust Bellows with Internal Flapper · Fits Volvo Penta AQ/280 select exhaust, Replaces 876633, 18-2757, 89010

875828 Exhaust Bellows with Internal Flapper · Fits Volvo Penta AQ/280 select exhaust, Replaces 876633, 18-2757, 89010

GHMarine exhaust bellows with internal flapper — CSKU 19B5001 — for select Volvo Penta AQ / 280 exhaust applications. Primary OEM 875828. Current / supersession path 876633. Legacy numbers when EPC lists them: 850004 / 875829 / 850443. Cross-refs 18-2757, 89010. Ships as one with-flapper exhaust bellow (+ clamps when your package shows them).

Sister CSKU 25B1095 leads with 876633 on the same with-flapper family — match the CSKU / package you stock. Need without-flapper exhaust 876631 / 875380 family → GH 17B1008 (not this page). Need drive-joint 876294 → GH 18B3001 / 17B1016. Need water hose 875822 → not in this box.

Which bellow is this?

It is the rubber exhaust bellow that includes an internal flapper / shutter. Confirm the old bellow has the flapper and shows 875828 or supersession 876633 before you order.

It is not a without-flapper exhaust (876631 / 875380 / 18-2758 / 89020 family), not a drive-joint / U-joint bellow, not a seawater hose, and not a dual-bellow + hose mega-kit.

Signs yours is due

• AQ / 280 exhaust bellow with a clear internal flapper is cracked, stuck open/closed, or heat-glazed — stamped 875828 / 876633 / 18-2757 / 89010 when readable.
• Chart shows 875828 but service path is 876633 — stay on the with-flapper family; do not switch to a without-flapper boot by guesswork.
• You almost ordered a three-piece kit photo (two bellows + S-hose) — stop; 19B5001 BOM is one with-flapper exhaust bellow.
• Divert: without flapper → GH 17B1008. Drive-joint 876294 → GH 18B3001. 876633-primary CSKU → GH 25B1095.

Will it fit my drive?

This bellow is Compatible with select Volvo Penta AQ / 280 drive exhaust applications when the old part is 875828 or supersession 876633 and the physical boot has an internal flapper. SP-A / DP-A only when EPC or the old bellow clearly shows 876633 / 875828 with flapper — not 876631. Do not shop by HP alone.

*Final fit = old bellow / EPC shows 875828 or 876633 WITH internal flapper. Without-flapper numbers are a different page.

OEM & swap numbers

Primary OEM 875828. Supersession / current 876633. Legacy when listed: 850004 / 875829 / 850443. Cross-refs 18-2757, 89010.

Wrong part? Read before you order

• NOT without-flapper exhaust (876631 / 875380 / 89020) — GH 17B1008
• NOT drive-joint 876294 (GH 18B3001 / 17B1016)
• NOT water hose 875822
• NOT a dual-bellow + S-hose kit as the shipped BOM
• NOT "verify with or without flapper" as one mixed decision on this page — this CSKU is WITH flapper only

What ships in the box

• 1 × Exhaust bellows with internal flapper (875828 / 876633 family)
• Hose clamps when supplied — confirm quantity against your package (often two; not locked until carton check)

Gallery note: "18b3001-wps" dual-bellow + S-hose photos are wrong for this CSKU (drive-joint kit contamination). Upload only after a real single with-flapper exhaust bellow photo is available.

Often ordered with related SKUs

• 876633-primary with-flapper CSKU → GH 25B1095
• Without-flapper 876631 → GH 17B1008
• Drive-joint 876294 → GH 18B3001 / 17B1016
• Combo 876631+876294 → GH 18B2001

Install tips on the with-flapper exhaust bellow

Exhaust bellow with internal flapper work on AQ / 280-family paths. Cold engine; disconnect battery; support the drive per the service manual. Confirm the flapper orientation before you seat the new bellow.

1. Match OEM 875828 / 876633 and confirm the internal flapper on the old bellow before removal; photograph clamp / orientation.
2. Access the exhaust bellow per the service manual; clean mating surfaces.
3. Seat the new with-flapper bellow fully without twist; verify flapper direction; place clamps on clamp lands.
4. Use the adhesive / procedure specified for this exhaust bellow in the service manual.
5. Reassemble, then check for water / exhaust leaks and flapper action before returning the boat to service.

FAQ

Is 875828 the same as 876633?

Same with-flapper family. 875828 is the primary identity on this CSKU; 876633 is the supersession / current path. Sister CSKU 25B1095 leads with 876633.

Can I use a without-flapper boot here?

No. If the old bellow has no flapper (876631 / 875380 / 89020 family), use GH 17B1008 — not 19B5001.

Does this include a second bellow and water hose?

No. Dual-table BOM is one with-flapper exhaust bellow (+ clamps when supplied). Kit photos from 18B3001 are wrong.

Is this the same as 25B1095?

Same with-flapper family (875828 → 876633). This page is CSKU 19B5001 — match the CSKU / package you stock.

Is this a drive-joint / U-joint bellow?

No. Drive-joint 876294 is GH 18B3001 / 17B1016.

Why must I see the flapper?

With-flapper and without-flapper exhaust boots are different parts. Ordering the wrong one is a common AQ exhaust mistake.

Please note

Aftermarket replacement by GHMarine. Not affiliated with engine manufacturers named above. "Compatible with", "Replaces", and cross-ref numbers identify the 875828 / 876633 with-flapper exhaust bellow family — always confirm OEM number, flapper presence, drive type, EPC, CSKU, and package contents before ordering.