The OEM pre-cleaner, if optioned, is Donaldson part number H002432. This is a beast of a pre-cleaner and measures 11.3” in both diameter and height. The outlet tube has an ID of 4.56". It is so big as to look comical on the Grenadier and completely unacceptable, IMO.
If a smaller pre-cleaner is desired a good alternative is Sy-Klone. The intake tube needed to use a pre-cleaner is Ineos part number GRA-0B14-001380. This can be ordered from a dealer/agent and is an easy retrofit that replaces the top section of the RAI. Sy-Klone does not have a cleaner which matches the inlet diameter but they do have one with an ID of 5.0", model 9005, and an adapter that will match this to the intake tube, item 50R45. The cleaner measures 10.63” in diameter x 7.03” in height. This is much smaller than the Donaldson. The weight is 2.0 pounds. The weight of the Donaldson is unknown.
It is worth noting the OEM Donaldson cleaner has a higher specified flow rate than the Sy-Klone 9005. That said this model Sy-Klone is considered the appropriate spec for high displacement petrol engines in excess of 6.2 liters (diesel over 5.0 liters) and thus should provide sufficient air for the 3.0 liter BMW engine in the Grenadier. The model 9005 was also OEM spec on the original Humvee/Hummer military vehicle which had a 5.7L V8 petrol engine in the smallest configuration and up to a 6.5L V8 diesel.
A second alternative would be to use a different model from Donaldson. Model H002427 is the same style as the OEM spec, has a matching outlet ID of 4.56” and smaller dimensions of 9.39” x 9.53". However, this cleaner has a lower flow rate than both the OEM Donaldson and the Sy-Klone 9005. It would also be possible to use other cleaners from Donaldson in combination with an adapter to match the outlet and inlet tubes. Two models are listed below that have 5.0” ID outlets the same as the Sy-Klone. And finally Donaldson has old school clear bowl pre-cleaners that will fit but are not an optimal match to the field conditions in which a Grenadier is likely to operate. This style cleaner has a lower filter efficiency and the clear bowl must be emptied regularly.
Both Sy-Klone and Donaldson also have pre-cleaner models with a smaller 4.0" ID, but those have been left from this summary because adapting them to the 4.5" OD intake tube would require an extended adapter in combination with multiple hose clamps. This is not a configuration that would be acceptable to most owners. Further, these smaller cleaners have even lower flow rates which might drop below the level required by the B58 motor.
Thanks to sean303boards for post #2,393 in the thread titled “What did you do with your Grenadier today?” This post identifies the part numbers for the intake tube and the OEM Donaldson pre-cleaner via a photo of each. See it here, https://www.theineosforum.com/threads/what-did-you-do-with-your-grenadier-today.12411127/page-120#post-1333248771.
Links to Donaldson and Sy-Klone Pre-Cleaners:
Sy-Klone Pre-Cleaner, 9005 (5.0" ID, adapter required)
https://www.sy-klone.com/9005.html
Sy-Klone Adapter 50R45 (5.0" ID cleaner to 4.5" ID intake tube)
https://www.sy-klone.com/5-inch-to-45-inch-rubber-reducing-insert.html
Source to purchase the Sy-Klone Cleaner and Adapter
https://snorkelupgrade.com/products/sy-klone-series-9005-air-precleaner?variant=40159325159624
OEM Donaldson Pre-Cleaner, H002432
https://shop.donaldson.com/store/en-us/product/H002432/12539
Alternate Donaldson Pre-Cleaner with matching ID, H002427
https://shop.donaldson.com/store/en-us/product/H002427/12537
Alternate Donaldson Pre-Cleaners with 5.0” ID (adapter required)
https://shop.donaldson.com/store/en-us/product/H002854/68629
https://shop.donaldson.com/store/en-us/product/H002700/59910
Clear Bowl Donaldson Pre-Cleaners with 4.5” ID (matching) and 5.0” ID (adapter required)
https://shop.donaldson.com/store/en-us/product/H000823/12408
https://shop.donaldson.com/store/en-us/product/H002044/12516
https://shop.donaldson.com/store/en-us/product/H002043/12515
If a smaller pre-cleaner is desired a good alternative is Sy-Klone. The intake tube needed to use a pre-cleaner is Ineos part number GRA-0B14-001380. This can be ordered from a dealer/agent and is an easy retrofit that replaces the top section of the RAI. Sy-Klone does not have a cleaner which matches the inlet diameter but they do have one with an ID of 5.0", model 9005, and an adapter that will match this to the intake tube, item 50R45. The cleaner measures 10.63” in diameter x 7.03” in height. This is much smaller than the Donaldson. The weight is 2.0 pounds. The weight of the Donaldson is unknown.
It is worth noting the OEM Donaldson cleaner has a higher specified flow rate than the Sy-Klone 9005. That said this model Sy-Klone is considered the appropriate spec for high displacement petrol engines in excess of 6.2 liters (diesel over 5.0 liters) and thus should provide sufficient air for the 3.0 liter BMW engine in the Grenadier. The model 9005 was also OEM spec on the original Humvee/Hummer military vehicle which had a 5.7L V8 petrol engine in the smallest configuration and up to a 6.5L V8 diesel.
A second alternative would be to use a different model from Donaldson. Model H002427 is the same style as the OEM spec, has a matching outlet ID of 4.56” and smaller dimensions of 9.39” x 9.53". However, this cleaner has a lower flow rate than both the OEM Donaldson and the Sy-Klone 9005. It would also be possible to use other cleaners from Donaldson in combination with an adapter to match the outlet and inlet tubes. Two models are listed below that have 5.0” ID outlets the same as the Sy-Klone. And finally Donaldson has old school clear bowl pre-cleaners that will fit but are not an optimal match to the field conditions in which a Grenadier is likely to operate. This style cleaner has a lower filter efficiency and the clear bowl must be emptied regularly.
Both Sy-Klone and Donaldson also have pre-cleaner models with a smaller 4.0" ID, but those have been left from this summary because adapting them to the 4.5" OD intake tube would require an extended adapter in combination with multiple hose clamps. This is not a configuration that would be acceptable to most owners. Further, these smaller cleaners have even lower flow rates which might drop below the level required by the B58 motor.
Thanks to sean303boards for post #2,393 in the thread titled “What did you do with your Grenadier today?” This post identifies the part numbers for the intake tube and the OEM Donaldson pre-cleaner via a photo of each. See it here, https://www.theineosforum.com/threads/what-did-you-do-with-your-grenadier-today.12411127/page-120#post-1333248771.
Links to Donaldson and Sy-Klone Pre-Cleaners:
Sy-Klone Pre-Cleaner, 9005 (5.0" ID, adapter required)
https://www.sy-klone.com/9005.html
Sy-Klone Adapter 50R45 (5.0" ID cleaner to 4.5" ID intake tube)
https://www.sy-klone.com/5-inch-to-45-inch-rubber-reducing-insert.html
Source to purchase the Sy-Klone Cleaner and Adapter
https://snorkelupgrade.com/products/sy-klone-series-9005-air-precleaner?variant=40159325159624
OEM Donaldson Pre-Cleaner, H002432
https://shop.donaldson.com/store/en-us/product/H002432/12539
Alternate Donaldson Pre-Cleaner with matching ID, H002427
https://shop.donaldson.com/store/en-us/product/H002427/12537
Alternate Donaldson Pre-Cleaners with 5.0” ID (adapter required)
https://shop.donaldson.com/store/en-us/product/H002854/68629
https://shop.donaldson.com/store/en-us/product/H002700/59910
Clear Bowl Donaldson Pre-Cleaners with 4.5” ID (matching) and 5.0” ID (adapter required)
https://shop.donaldson.com/store/en-us/product/H000823/12408
https://shop.donaldson.com/store/en-us/product/H002044/12516
https://shop.donaldson.com/store/en-us/product/H002043/12515
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