Technical: Isuzu 42 Servicing Info

This is my reference page for the parts I regularly need for servicing the engine and also somewhere for me to store copies of the engine manuals etc.

So you know which engine we have here is a photo of my engine bay (after a re-paint so unusually clean!)

I used to buy filters from a motor factor in Croydon which has now closed 😦 so some of the references are tied into their references. Nowadays I tend to buy genuine parts from Kings Lock Chandlery (they do online also) and OEMs from inline filters – links below.

These are my parts lists:

Air Filter:  Isuzu Part No. 100066-4LS OEM References:  FRA CA5315 or Cooper AG 294,  An equivalent seems to be a Reisse 46100020.

Supplementary Fuel Filter:  FRA C1191PL or FDE-HDF296, I fancy the second is better?

Main Fuel Filter:  The manual say Isuzu Part No. 897172-5491. Last time my engine was serviced it was by the excellent Neil Coventry he put in an Isuzu 5876100220 so I suspect that the part number has changed. Finding an OEM equivalent is interesting.

Main Fuel Filter OEM References:either Baldwin BF954 or Donaldson P553240 or Fleetguard FF5030, Filtron PP944 or Mahle KC5. Note these are all a fraction longer then the Isuzu part so slightly more awkward to remove with my style of filter wrench.  This site cross references the Isuzu 8971725491 with an Isuzu 8941329471 and that in turns leads to a Fleetguard FF5394 which is shorter, same length as the Isuzu so I have ordered one, look out for us anchoring somewhere. Update: The FF5394 looks almost exactly like the Isuzu filter, works well, no issues so far. Note to self: I have photos to post.

Oil Filter Isuzu Part No. 894456-7412 OEM References: FRA PH6811 Mahle OC205

Correct oil is 15W40 CC grade which can be hard to get hold of. Supermarkets sometimes have it, motor factors often have Comma 20W50 CC Engine Oil, can be really cheap but outside the scope of what Isuzu recommend – see page 26 of the Isuzu manual. There is an excellent Morris oil best bought from that lovely garage in Wheaton Ashton.

Throttle and gear box cables: 33C TYPE CONTROL C8 CABLE 9 FT, 33C TYPE CONTROL C8 CABLE 7 FT

Chandleries stock genuine Isuzu parts but take care, the genuine parts are always expensive but not all chandleries are the same – did not note down prices but I think Kings Lock in Middlewich had pretty competitive prices for Isuzu branded spare parts (and they are nice people). Hint: When shopping in a chandlery just cover your eyes as you put in the PIN number, puts the shock off for a month or so.

My last shop from inline filters in December 2021 had these prices but all are plus VAT ie add 20%:

c

1 ea.	FFR-CA5315 FILTER-Air(Round)	£6.52
1 ea.	FDE-HDF296 FILTER-Fuel(Can Type)	£3.90
1 ea.	FBW-B1425 FILTER-Lube(Spin On)	£8.84
1 ea.	FFG-FF5394 FILTER-Brand Specific(Fleetguard)	£4.73

My “Library” as it is so far:

The correct parts – click parts-list

HMI engine manual – click hmi-isuzu-manual

PRM gearbox manual – click prm-manual

Isuzu Canal boat leaflet – click Isuzu_Canal_Boat_leaflet

Isuzu Pricelist – click Isuzu_pricelist_202009

Isuzu dealer list – click Isuzu-dealer-list-20010608

Isuzu Engine Manual – click isuzu_4le1_opm

Isuzu Workshop Manual – click Workshop-Manual-Isuzu-4lb1-4lc1-4le1-Gb

CAV Filter manual – click CAV Filter Manual

Other bits from the boat:

Haztec Manual (new type sensor): Click Haztec Instructions

Flojet servicing instructions: Service PAR-MAX 31xxx and Flojet Quad

I should start a list of useful web sites if only so I don’t have to resort to google when I can’t quite remember them. I will add more later but whilst I think about it here are two:

Successors to HMI: http://www.enginesplus.co.uk/

We needed to get our alternator sorted so used the excellent A&A Auto-Electrical in Croydon to check it out for us, their diagnosis was cream crackered and they put us onto these people who could get us a new alternator at a cracking price next day:

https://www.westlancsautoelectrics.co.uk They also do starter motors . . . .

This was a useful site for odd Isuzu Parts but website has been down for a while:http://www.quayworks.com/

Instrument panels: https://www.dragonmarinesystems.co.uk/

If you have any useful sites to add or part numbers for obscure things eg starter solenoids please do post a comment.