Note about the Oliver 1250 GAS Tractor ...  

I have nothing in the way of Tune-up items, Carburetor, Coil, Governor . . . etc.  
The best advice I can give on this is make a post on http://hartparroliver.org on their "Forum" link.
Oliver 1250 Gas & Diesel
Power Steering Pump

673068AS Pump Assembly

I HAVE NOTHING !
Oliver 1250 Gas & Diesel
Power Steering Pump

673068AS Pump Assembly

I HAVE NOTHING !
I HAVE NOTHING !

Oliver 1250 

670991AS Fuel Pump
Ignition Parts References:
OEM # 671777A Distributor Cap
- FIAT # 9908428
- NAPA # EP211
- DELCO # E351
- BORG # C628
- BOSCH # 1-235-999-012
- SORENSEN # G58
Ignition Parts References:
OEM # 671800A Rotor
- FIAT # 9910022
- NAPA # EP221
- DELCO # E464
- BORG # D551
Most 1250 & 1450 Parts are pretty much non-existent.

The best advice I can give on this Model is make a post on http://hartparroliver.org on their "Forum" link 
and also start trying the Salvage Yards.
Serving the Agricultural Replacement Parts Business since 1972
Also on the Oliver 
500 & 600 Tractors
contact Nelson LeCount
260-761-3155
I'm not your guy on these models either
OLIVER 1250 ITEMS WANTED

05/05/2017, Randy Lund has a Generator/Governor Assembly for sale. Randy can be reached at  989-291-5093

07/24/2017, Stanley Tvedt is looking for several items.  Give Stanley a call at 507-365-8237 around 7:00 > 7:30 AM Central time, if you can help him.
Also on the Oliver 1250 
I have NO Front Grilles, NO Head Lights
NO Ignition Parts, NO Governors, NO Fuel Pumps

WATER PUMPS . . . I HAVE NOTHING
(Gas or Diesel)

http://www.hartparroliver.org/

Try Craig Kennedy at 
214-793-2227 for Various 1250 24 volt Ignition, Electrical & Engine Parts
OLIVER 1450
FIAT 615
FIAT 615DT
OLIVER 1450 ITEMS WANTED:

03/02/2015 - Looking for a Front Grille 
Please Call - Jerry Curtis 573-768-6355
01/20/2016 - Looking for Steering Gear Box Items 
Please Call - Don 570-256-7258
02/05/2016 - Looking for front grill less insert (at the top) Please call - Ralph McKeel 919-440-9282
05/18/18 - Looking for Oliver/Cockshutt 1450 head gasket
Hi, would you have a head gasket for a 1968 Cockshutt 1450 motor? Also, will this motor fit into a 1969 Oliver 1450 tractor.

Thanks, Andrew  
email:Drew.breckenridge@live.ca
11/26/2018 - Looking for Grille Inserts, Battery Box, Air Cleaner 
Please Call - Douglas Clark 703-314-1585